Questions tagged [pset1]

The problem set for Week 1 introduces the C programming language.

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pset 1 mario less, use of undeclared identifier 'j'

i'm confused to why j is considered undeclared when i used it in the code below. can anyone explain to me what i'm doing wrong here? thanks so much for any help. i'm having trouble understanding how ...
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Pset1 “cash” question

this is my first question here so sorry if I do it wrong. My code compiles (it´s not finished yet), and it prompts, but when I run ./cash and type a number, It always gives me 0 coins, no matter what ...
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3answers
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:( handles lack of argv[1] failed to execute program due to segmentation fault

if (argv[1] == NULL) { printf("Usage: ./caesar key\n"); return(1); } this is the solution before the program received the first statement validate null
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the code which is expected and my actual code are the same but check50 see it as incorrect LAB1

#include <cs50.h> #include <stdio.h> int main(void) { // TODO: prompt for the start size int n; do { n = get_int("start size: "); } ...
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My do-while loop does not work

do { number = get_long_long("What is your credit card number? "); } while((number < 1000000000000) || (number >= 10000000000000000)); This loop is not accepting inputs. I do not ...
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Problem set 1, Cash executuion issue

My code is as following: #include <stdio.h> #include <cs50.h> #include <math.h> int main(void) { //prompt for change float a = 0; int c = 0; ...
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make mario won't work but i'm in the correct directory

make mario won't work but I'm in the correct directory. I haven't even started writing the solution properly as I'm stumped on getting it to compile. Any suggestion? I tried restarting the IDE and ...
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How to submit Pest1 with SUBMIT50?

When I try to submit Pset1, in the terminal, it always does this: submit50 cs50/problems/2020/x/mario/less Connecting...... Authenticating..... GitHub username: A***********8144 GitHub password: ******...
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A problem with my code in PSET 1 Mario less comfortable

I think I have got everything right except when my program is run it prints an extra line without any hashes, can anybody point out or correct my arithmetic (or the code)? Here's the code: #include<...
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1answer
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CS50 IDE returns - bash: command not found

I get the following error while trying to execute a command. Example: ~/pset1/hello/ $ hello bash: hello: command not found 'make hello' worked fine: ~/pset1/hello/ $ make hello clang -ggdb3 -O0 -std=...
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pset1/credit outputs the right output but fails check

I'll share the printing part but not the calculation part, though happy to do that to it's just a bit lengthy. Nonetheless marked outputs are the right/expected output when run stand-alone but fails ...
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PSET1 So my code executes and prompt me for the money owed but that's it..nothing happens. Can someone point me in the right direction

I don't know what I'm doing wrong I get no errors. I feel like my code #include <cs50.h> #include <math.h> #include <stdio.h> int main(void) { float x; float a = 25; float b = 10; ...
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pset1 mario (less comfortable), expression error

I keep getting 'expression error' when I try to compile my code; any help would be appreciated. Code is as follows: #include <stdio.h> #include <cs50.h> int main(void) { // prompt ...
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Getting error on cs50 problem set 1 mario “handles a height of 1 correctly,timed out while waiting for program to exit”

Getting error on cs50 problem set 1 Mario "handles a height of 1 correctly, timed out while waiting for program to exit" Here's my code: #include <stdio.h> #include <cs50.h> int ...
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Problem probably related to floating numbers from CS50 pset1 cash

how you doing? I can't figure out where is the bug from my code :/ It's really strange and the results are not the same if you do the same test with "0.01", for instance... #include <...
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PSET1 Cash Outputting negative number?

I have a very bizarre problem I am experiencing. When I input any number the output by my program is as such: coins: 2 mQ + mD + mN + pN = -1055516176 When I run the program again it outputs nothing ...
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Help, doe not working - cash [duplicate]

Can someone please help me, as much as I think it should give the least amount of coins needed but it is not.
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Code not working - cash

Can someone please help me, as far as I think this code should give back the number of coins needed but it is not working.
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1answer
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Can you tell me my mistake

Please help, I don't know where the problem is.
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1answer
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Pset1 Credit - Why is my code bypassing the Floor function inside If statement?

Here's my code- int f_1 = floor(N / 1000000000000000); int f_2 = floor(N / 1000000000000); int f_3 = floor(N / 100000000000000); int f_4 = floor(N / 10000000000000); if (...
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1answer
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Pset1 - Mario less printing 2 extra spaces

I have submitted mario.c and while it printed the pyramid, it is printing 2 extra spaces in front of each hash row. What am I missing here? #include <cs50.h> #include <stdio.h> int main(...
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pset1 credit solution. code not working but there is no bug

I wrote this code and I can "make credit". However, when I tested it with numbers, it doesn't work. Please see my code below. #include <cs50.h> #include <stdio.h> #include <...
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Can you tell me my mistake? ;)

https://submit.cs50.io/check50/7e964137024d7b7d7c084ee2e266dada2ffb914c could anybody tell me what my mistakes are ? #include <stdio.h> #include <math.h> int main (void) { float dollar; ...
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Could anyone explain the error message?

#include <cs50.h> #include <stdio.h> #include <math.h> int main (void) { float dollar; do { dollar = get_float("Enter your change"); } while (...
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Could someone explain to me how curly braces work?

#include <cs50.h> int main (void) { int height; do { height = get_int ("Enter Height"); } while(...
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Im having a real hard time

I have a cash directory in which my source code cash.c and machine code cash are within. Why does this pop up? $ cd workspace $ cd cash.c $ make cash clang -fsanitize=signed-integer-overflow -...
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Hello everybody : ) Can you help me out?

$ clang cash.c /tmp/cash-94cd4e.o: In function main': cash.c:(.text+0x1c): undefined reference to get_float' cash.c:(.text+0x44): undefined reference to `round' clang: error: linker command failed ...
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pset1 cash THESE 2 ERRORS DROVE ME WILD help a newbie out, I will send you good vibes in return

error: expected identifier or '(' error: expected ';' after top level declarator int main (void) code #include <cs50.h> #include <stdio.h> #include <math.h> int main(void) float ...
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1answer
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pset1 credit: I am unable to identify what's wrong in the logic of my code?

Kindly tell me what mistake have I made in this program? pset1 Credit: (my code) https://pastebin.pl/view/5646dbf1
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3answers
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When to Start the Next Week?

I finished the pset from Week 1 however I am still unable to finish the credit problem. Should I move on to Arrays and come back at a later time or wait until I am able to solve it?
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credit pset1 bruteforcing doesn't work

I was trying out credit and tried to write a code for all 15 digit cards so if a AMEX card exists it should work in theory. However even with valid cards I'm getting the input invalid. I have not ...
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expected expression error in pset1 credit for loop

I am getting a error in the following line long checksum = (long) for (int i=1; i < 8; i=i+2) { if (checksum > 9) { (((long) 2*(credit_number % (long) ...
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I can't figure this out can anyone help PLEASE ( line 7 error) cash.c:7:1: error: expected identifier or '(' {

#include <stdio.h> #include <cs50.h> #include <math.h> int main (void); { float dollar; do; { dollar = get_float ("Where is my change: "); } ...
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Getting Incorrect Output but can't seem to find an error Pset1

I have written the following code for cash pset1 #include <cs50.h> #include <stdio.h> #include <math.h> int main(void) { float dollars; do { dollars = get_float("Enter The ...
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2answers
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Can anyone help me troubleshoot my code for the CS50 Credit problem? (**not trying to cheat, just need some help!)

This is the code I have written in c for the cs50 credit pset 1 problem. I am checking the length of numbers entered, and the first digits (AMEX 15 digits, starts with 34 or 37; MC 16 digits, starts ...
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1answer
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CS50 PSET1 Hello, undefined reference to main

whenever i type clang hello.c it tells me that there is an undefined reference to main and i dont know how to solve this. please see the image to see my code and the error.
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CS50 Newbie needs help! Pset 1 cash problem. It compiles and runs but answers are wrong :(

Please check the code below. It runs fine but with a few "errors". when I input 0.41 as per the problem example, it gives me 16 coin count instead of 4. What is missing? Please help me ...
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1answer
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Cash program only outputs input*4

I'm very new to coding and am really struggling with pset1- cash. I watched some tutorials and walkthrough videos, and with my limited knowledge, I cannot find any issue in the code I made. With the ...
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2answers
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pset1 cash less, problem using for loops

I tried to use for loops to solve the cash (less) problem set, not sure if thats possible. Can this code be fixed or do I need to use while loops instead? the code compiles, but the output is either (...
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1answer
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trouble summing the sides on credit

I have made it to the point it separates every digit into two sides so as to have two different sums, but then It gives me the wrong value of the sum. I'm pretty sure there is a bug in therms of it ...
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1answer
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HELP, keep getting this error… error: invalid operands to binary expression ('float' and 'int')

Hi! keep getting this error in my code Could someone kindly help me figuring out whats wrong? Thank you :)
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My terminal showed ^L

I tried to clear the terminal by pressing command K (i have a mac) and the entire thing was cleared but it showed ^L. I can't fix it no matter what I do :< help would be appreciated thank you.
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1answer
122 views

Pset1 Mario - right-align the bricks - for function?

I've reached the point where I can create a pyramid but have an extra dot in the last row. Can't seem to remove it . Is there something i'm doing wrong in the nested 'for' function? #include <...
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1answer
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“cash.c:7:1: error: expected identifier or '('” What do I do?

I've been trying to compile cash.c, but for a reason, it always says I have an error in line 7... could someone help me find the error...? I tried different things to try and make it work but it does'...
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1answer
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Pset1 How to print variable to make sure input is correct?

In the Cash assignment, I am trying to print my variable cents to ensure it is properly stored. Why doesn't my code accomplish this? There is no output beyond the do while loop. Additionally, in this ...
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pset1 expression error

i keep getting this expression result unused in this line of the code else(cents>=1 && cents<5); . Any thoughts? do{ if(cents>=25){ tcoins++; cents=cents-25; } else if(cents&...
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3answers
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PSET 1 Can't implement loop at the prompt

I'm still on my prompt part, couldn't get to the pyramid yet, my code compiles but I can't make the loop recursive, that is, after the first entry it goes back to the prompt $. Here is the code: #...
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1answer
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PSET1 Mario turning the stairs

I can't understand the logic of turning the stairs around. I ve spent hours looking it up and re watching the video... Can someone explain it to me using pseudocode?
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1answer
54 views

Pset1 Cash less comfortable - not running for 0.41 and 0.01

-- hi im running into a problem with my code. It's executed pretty well with many inputs except for 0.41 and 0.01. It didn't print out any answer but just ran indefinitely... #include <stdio.h> #...
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1answer
112 views

Please help!! Pset 1: creating a pyramid

I have been struggling with pset1: creating a pyramid for a long time. I am reading other people's codes to learn the logic but I still cannot understand what is going on. Would you please explain the ...

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