Questions tagged [pset1]

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

186 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
0
votes
1answer
457 views

for loop mario.c

This is what I have for Mario.c less comfortable. I am having a problem printing the pyramid. Am I suppose to have a for loop for every space, #, and newline. for everyline. #=1 #
0
votes
1answer
141 views

looking at why jenny's number is not a isbn number

I am looking at the problem and I was wondering how come jenny's number is not an isbn number, the sum adds to 253 and it is divisible by 11. I am kind of confused here
0
votes
0answers
639 views

How to approach Pset1 Mario problem?

So far I am able to get input from user and print the amount of rows using a loop, but after that i am stuck. after this, i just don't know how to approach adding an extra # starting on row 2 and ...
0
votes
1answer
79 views

pset1 greedy.c check 50 programm error

I am wandering around for answers. But I end up that my code is correct ( I'm 90% sure :P ) #include <cs50.h> #include <stdio.h> int main(void) { double change; do { ...
0
votes
0answers
132 views

greedy algorithm

#include<cs50.h> #include<stdio.h> #include<math.h> int main() { float f=0; long int a=0,c=0; printf("Enter the float value:"); do { f = get_float(); ...
0
votes
1answer
48 views

Pset1 I cannot print the correct amount of coins returned (greedy)

I'm trying to solve the less comfortable problem set of week1. I believe I'm somewhat on the correct road (at least i can get a return number). From how I implemented my code, it seems that when I ...
0
votes
1answer
76 views

pset1 greedy – get as results ten digits numbers *SOLVED*

I implemented my greedy with modulo and it works for many numbers but not for 0.01 and 0.15 :( input of 0.01 yields output of 1 \ expected output, but not "2058567041\n" :( input of 0.15 yields ...
0
votes
0answers
99 views

Need Coding style help - pset1 credit.c - (style50 failed to parse, feels and looks messy)

Style50 fails to even parse the code and it feels messy and cluttered. Need coding style pointers. Check50 passes. Trying to get the most out of this course, not just fumble through. What is wrong, ...
0
votes
0answers
473 views

I'm working on isbn.c. Here, instead of one 'yes', it's displaying several yes'es. What mistake did I make?

Why is my output showing 'yes' multiple times? I think it's because the values of 'num' and 'num1' are being run separately each time to make the value 'finally', but I'm not sure. Please help me fix ...
0
votes
1answer
79 views

Understanding for loops and lingering questions I need answered before moving on!

I coded this and it passes. I just want to understand it much better than I do at this moment. I got hung up on a few of things and found the solutions online to those questions I was having but I ...
0
votes
0answers
94 views

Mario and Greedy programs can't pass the test

I will start talking about mario, because i can't see anything incorrect with it. So, here we go: This is my codeline: and here is some inputs/outputs (i believe it is working correctly): However, ...
0
votes
1answer
134 views

so im working on skittles pset and

skittles.c:6:1: error: expected identifier or '(' { ^ this is my error and this is my uncleaned up code #include <stdio.h> #include <cs50.h> int main(void); { int tries = (0); int ...
0
votes
0answers
166 views

CS50: Bad Credit - pset1 hacker1: Program compiling but not executing

the following code for CS50's hacker edition Bad Credit is compiling but is not executing. Would really appreciate a review: #include<stdio.h> #include<cs50.h> #include<math.h> // ...
0
votes
2answers
274 views

Stuck on Mario Pset1

I'm stuck on Mario Pset1. I keep receiving line breaks, and the function seems to skip the nested for loops. #include <stdio.h> #include <cs50.h> int check(int b); int checktwo(int b); ...
0
votes
0answers
32 views

What is the differnce (if any) between #inclide <libraryName.h> and -l[library]

the title is the question: What is the differnce (if any) between #inclide and -l[library] when using clang in the terminal
0
votes
1answer
37 views

function definition

#include <stdio.h> #include <cs50.h> int AnimalCategory(int); //function prototype int CurrencyCategory(int); //function prototype int ScienceCategory(int); // function prototype int ...
0
votes
1answer
102 views

Incrementing values using variables

This is my code for incrementing either positively or negatively but somehow the code compiles but dosen't work. #include <cs50.h> #include <stdio.h> int main() { int Ini, Con, Incre;...
0
votes
0answers
76 views

Can someone tell me what is wrong with my code?

Can some one tell me what is wrong with this code?this code is giving me error in the cs50ide. #include<stdio.h> #include<cs50.h> int main(void) { int i,height,n=1; do { ...
0
votes
0answers
28 views

trying out my code

#include <cs50.h> #include <stdio.h> int main(void) { // ask user for input printf("What time is it: "); int x = GetInt(); { if (x == 12) { printf("...
0
votes
1answer
426 views

Greedy loop problem

I'm struggling with the "greedy" assignment from pset1. I tried to use division to get the amount of coins needed and modulo to get the remainder, wrote code with loops, it compiles and runs, it gives ...
0
votes
0answers
257 views

Pset1, Hacker1,Credit.C, error while converting long long into an array

TL;DR Why does METHOD2 below work and not METHOD1?? I'll preface this with saying that after hours of trial and error, I got the code to work. However, I am still VERY CONFUSED as to why one method ...
0
votes
0answers
22 views

Is usage of many header files will increase the memory usage?

In my program I had used four header files, but actually I need only two. Does that consumes more memory or is it is an overhead?
0
votes
3answers
524 views

check50 is getting a different result from me on mario

I have tested every criterion of Mario, and they all are met, but check50 is getting a different output than me. Here is a transcript of what happened. elephant1123@ide50:~/workspace/pset1 $ ./mario ...
0
votes
1answer
159 views

I can get the correct height for my pyramid but I can't get the spaces or #s to add or subtract properly in my loop

{ for (int i = 0; i < n; i++) { for (int j = 0; j < n; j++) { printf("%d\n", j); } for (int k = n; k < n + 2; k++) { printf("#"); } printf(" \n"); return (0); }
0
votes
2answers
342 views

Pset1 Greedy problem

I thought I had made the right code the behind my logic was to first divide the number with 25 and keeps on dividing it until the answer is less than one which means it cannot be divided any further ...
0
votes
1answer
195 views

Still needing help with Mario pyramid construction

I can't figure out how to make the pyramid work. My current code from the //create pyramid onward is: //create pyramid for (int k = n; k+1<n; k++) printf("%d", k); printf("#"); ...
0
votes
1answer
279 views

Hacker pset1 credit.c always gives invalid?

I tried to attempt the credit.c problem. My code is as follows: #include <stdio.h> #include <cs50.h> #include <math.h> #include <string.h> int main(void) { printf("Please ...
0
votes
1answer
133 views

Mario syntax error

Something's wrong with my function declarator, and i have a different error that I don't understand at all. Please help! Here is the code: #include <stdio.h> #include <cs50.h> int n; ...
0
votes
1answer
204 views

Mario pset1 a little hand please!

Spoiler alert code inside this link! !http://imgur.com/OIHvPFC I am having trouble with the mario, any tips of how i can get on with this? I have listed my integers at the start but maybe i over ...
0
votes
0answers
163 views

I have a error during compilation of pset1 water.c

Any idea why this error is showing clang -ggdb3 -O0 -std=c11 -Wall -Werror -Wshadow water.c -lcs50 -lm -o water
0
votes
4answers
702 views

mario.c; error message: expected identifier

I have been trying for more than a week to correct compiling error: mario.c:19:1: error: expected identifier or '(' The response I received did not help. #include <cs50.h> #include <stdio....
0
votes
0answers
133 views

Pset1 No rule to make target 'water'

I wrote my code and I am using the appliance online. The appliance version is 19 so even though this question has been asked about mario and hello, there are no instances of the water pset found. ...
0
votes
3answers
288 views

I'm having trouble printing the hashes and spaces. I've started with this, but it doesn't seem to work. Any ideas?

My code is down below. Everything above the for loop is fine. I need help with printing spaces and hashes. #include <stdio.h> #include <cs50.h> int main(void) { int h; do { printf("...
0
votes
2answers
252 views

pset1 Mario trouble

I've been working on this for days now, and have reached a point where I'm afriad I've gone further away from the LOGIC of the problem. At the moment, the complier doesn't print out line 16 and yet ...
0
votes
0answers
117 views

pset1 check50, help with the code [time for a change] all outputs are correct except one

All the outputs are correct except one. Tried for loops, while loops, even if loops, but it won't just solve the problem. :< [code edited away per academic honesty guidelines] harvard@ide50-...
0
votes
1answer
254 views

Why does “compiles” fail when checking with check50?

In the instructions, they were using Dropbox. I don't have Dropbox, so what should I do? update: Now I got my way through until the actual check. The 'exist' part is green (yay) but the compile part ...
0
votes
1answer
52 views

virtual machine doesn't power on

i just installed cs50 appliance but when i tried to power on the virtual machine this message appeared anyone can help me please?
0
votes
0answers
69 views

Typing hashtag in gedit using a mac keyboard

I've already changed my keyboard layout to English (UK) as per these instructions (Configure appliance for QWERTY layout (UK)). Every key is now correctly assigned except for hashtag, which on my ...
0
votes
1answer
332 views

pset 1 mario space help

I am having a problem printing the spaces. The code I have gets the number as required. It prints out the number of hashtags desired based on user input. However, there are no spaces. Where can I ...
0
votes
1answer
141 views

pset1: greedy Correct output when run in terminal but check50 shows different output

I am really frustrated with this error. I have been try all day, changing my code here and there but nothing works. Plz help me..
0
votes
1answer
368 views

Debugging problem caesar cipher pset1

I need some help with my debugging for the caesar cipher. I get these errors. [image replaced with actual errors produced by the code that follows] caesar.c:25:17: error: incompatible integer to ...
0
votes
0answers
254 views

Cannot submit PSET1

I recently finished PSET1 and I am unable to submit through the following website: https://newapps.cs50.net/cscie50/2015/@/submit/review/axis/10735 I am taking the CS50 course via Harvard Division of ...
0
votes
3answers
178 views

pset1 mario. can't fix errors, please help!

I can't understand what's wrong with the code. I've changed it many times, but errors are always similar.Can anyone please check the code and tell what's wrong?
0
votes
0answers
161 views

User input on Mario-isn't asking to retry

I'm wondering if this is the correct code for getting the user input for Mario. It isn't asking the user to "retry", but just asking for an integer over and over until it meets the parameters. ...
0
votes
2answers
315 views

VMware Fusion Product Key

I have downloaded VMware Fusion and more or less followed all the instructions provided, yet I could not locate the product key to activate the software. Does anyone know where I could find it?
0
votes
0answers
73 views

What is exactly greedy.c do?

I have no idea where to start and how does it support to work! I never seen it such as that thing in the picture that is in assignment! You may see me as stupid person, but I have no idea how is work ...
0
votes
0answers
113 views

pset1 greedy simple version doesn't work

So I was trying to start off my greedy code with a simple part thereof... I am trying to simple get a float... then if it is more than 25 cents, subtract 25 cents from it, and add 1 to my count... ...
0
votes
0answers
137 views

I can't compile my code for pset 1 and I don't know why

I don't know what the problem is, it says the error was the lack of an "expected identifier or '('"
0
votes
0answers
275 views

Why does bash come up with pset1?

I'm having trouble calling up my programs in the terminal. I try to make my program hello.c or mario.c and i get bash file not found or nothing to be done with this file. I have looked at other ...
0
votes
1answer
197 views

Vrtual Box error: low memory

I get this error when using VirtualBox: VirtualBox error ID: Host memory low; unable to allocate and lock memory, the virtual machine will be passed, please close applications to free up memory.<...