Questions tagged [hacker1]
The hacker1 tag has no usage guidance.
33
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PSET 1 Hacker Mario [duplicate]
The instructions are here:
http://cdn.cs50.net/2016/x/psets/1/hacker1/hacker1.html#itsa_mario
and here for the full understanding of the basic requirements:
http://cdn.cs50.net/2016/x/psets/1/pset1/...
0
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1
answer
342
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Credit Card Test Confusion
I am supposed to find if cc numbers are valid based on these rules:
Multiply every other digit by 2, starting with the number’s second-to-last digit, and then add those products' digits together.
...
0
votes
1
answer
516
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CS50 PSET 1 Hacker Bad Credit Code
The goal is to find if a credit card number is valid.
Complete Instructions Here:
https://cdn.cs50.net/2015/x/psets/1/hacker1/hacker1.html#bad_credit
Can I please know what makes my code fail?
(I ...
0
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0
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110
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CS50 PSET 1 Hacker Bad Credit
With this code, I want to "Multiply every other digit by 2, starting with the number’s second-to-last digit, and then add those products' digits together"get the ".
I don't get the correct results, ...
0
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1
answer
109
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Water.c Hacker1 check50 error
This program works fine. But check50 show this errors. Anyone can help me please. Thanks!
check50 report:
:) water.c exists
:) water.c compiles
:) 1 minute equals 12 bottles
:) 2 minutes equals 24 ...
user13767
0
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0
answers
169
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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>
// ...
1
vote
3
answers
177
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hacker1 edition of mario.c, alternative solution, check50 expected output for heigth 2 and 23
I started with mario.c from hacker1 problem set. I found a tricky and fast solution (when building up really high pyramids > 1000 rows) to build up the pyramids using printf's align functionallity ...
0
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1
answer
170
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Pset1 Hacker Edition, Bad Credit "INVALID" Result!
#include <stdio.h>
#include <cs50.h>
#include <math.h>
int main(void)
{
long long n;
int nDigits;
long long k1, k2, k3, k4, k5, k6, k7,k8,k9,k10,k11,k12,k13,k14,k15,k16;...
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0
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259
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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
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1
answer
292
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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 ...
- 103
0
votes
1
answer
164
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What is wrong with my hacker mario.c code for pset1?
I managed to complete the hacker version of the mario.c problem in pset1 using "for" loops. However, when I re-tried the problem using "if" and "else if", I could not achieve similar results. Here is ...
- 103
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votes
3
answers
762
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Infinite looping in hacker 1 - water
My do-while loop successfully rejects negative numbers and 0, however, if I input text such as "foo" when prompted for the length of a shower in minutes, the program runs into an infinite loop, ...
- 15
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1
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93
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Hacker1 seems to run properly, but won't pass check50
I completed pset1 but I seem to have some problem running the Check50.
when I put my output next to the one provided for testing, it seems the exact same...
I tried to use an array with chars, is it ...
0
votes
2
answers
241
views
credit.c frustration
Im considering skipping :( I dont really understand why it always prints INVALID4....
#include <stdio.h>
#include <cs50.h>
#include <math.h>
int main (void)
{
//Initialize a ...
0
votes
1
answer
98
views
credit.c help too debug please
Well i tried to debug it, by giving each INVALID a number, but i keep getting invalid 4, i think it is in the sum of array, but can someone look for the bug, i am just getting stressed out...
#...
-1
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1
answer
99
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Why isnt my program working? credit.c
Well I decided to make the credit.c program, and I did, I started debugging and so until it compiled. But it always outputs INVALID and I can´t find out why, so this is my code:
#include <stdio.h&...
0
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1
answer
2k
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Credit GetLongLong Issue
I'm having issues using the GetLongLong function. For some reason the output I get doesn't match the input I put in. Here, is my code.
#include <studio.h>
#include <cs50.h>
int main(void)...
- 1
0
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1
answer
185
views
Processing the separated digits using Luhn's Algorithim
My code compiles and runs. Separating out the required numbers also works. The problem in my output seems to start at the processing of Luhn's Algorithim. The section of below code processes the ...
- 142
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1
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37
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Infinite looping
Credit PSET 1 Hacker:
The below code compiles and executes but in an infinite loop. I've tried writing the while condition a few different ways, but it seems to end up the same. I can get the ...
- 142
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1
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163
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hacker1 mario: output appear correct, but won't pass check50
I have fiddled around with it a bit. I thought it might be the extra spaces after the second half-pyramid, but I removed them and I still can't get it to work.
I appreciate the help. Thanks!
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2
answers
24k
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How to convert the digits of a number into elements of array?
For example in pset1 hacker edition program asks user to input the number of credit card.
Imagine that a digits are: 1234567890
So can anyone tell me does it possible to convert this number into ...
- 1
0
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0
answers
122
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hacker credit expected output
I'm getting that dreaded "expected output" error when running check50. Thing is, I don't have an added newline \n in my code. The actual output sure appears to be identical to what the checker was ...
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3
votes
1
answer
177k
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Why do I get the "invalid operands to binary expression" error?
While trying to solve credit, I get the following error
rem and number1 are declared as long and even if I change them to int, I still get the same error.
Please provide a solution and explain what ...
- 206
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1
answer
120
views
Should I submit both Mario & Bad Credit or only choose one?
For pset1, should I submit both tasks (Mario & Bad Credit) or just choose one?
0
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2
answers
682
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errors I cant understand in credit.c can anyone explain?
I am taking the number as a string(n) and then trying to convert the string into ints to add them like this:
else if(strlen(n)==15 && (n[1]==3&&(n[2]==4||n[2]==7)))
{
for(i=14;i&...
1
vote
2
answers
420
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hacker1 mario runs properly but fails check50
As you can see the code runs fine and gives the expected output of double pyramid for the numbers entered between 0 and 23 but check 50 says i have an error can someone enlighten me about what i have ...
0
votes
1
answer
63
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Code Debugging: Help?
Looking for some debugging help. I moved printf statements in and out of the code to see where the problem was coming from. I know that everything prior to this is correct and that the loop executes ...
- 71
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1
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71
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Is it bad to use an ellipsis to handle a range of values in one case of a switch statement?
I was hoping to use a switch statement for the printf("CARD_NAME"); part of my code, and was wondering if it was bad style/practice to use ... like below? The examples from class all show to use case ...
user2137
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1
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136
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credit.c project in hacker1 I keep having this error?
While trying to compile the codes uploaded I keep having this error which I couldn't understand!
0
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1
answer
186
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Why is the last digit of my credit card number wrong in hacker1?
I was working on the hacker version of pset1 and I was using a for loop to grab the values of every single individual number (in CC#) and transfer it to an array. The for loop works fine, except that ...
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3
votes
1
answer
375
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Why Does credit Fail Passing check50 Tests?
When I input the credit card numbers that check50 inputs in its tests to my program myself, It correctly identifies the numbers as expected. However, when I run check50, it's not identifying correctly....
2
votes
2
answers
3k
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problems with long long variable type
I´ve been looking over internet and through the man cs50.h to find out why a simple program like this generates values error from 8 onwards, but i couldn't find why reads a value and stores another. ...
- 111
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3
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2k
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hacker1 - credit - Problems on some card numbers
The logic from hacker1:
Multiply every other digit by 2, starting with the number's second-to-last digit, and then add those products' digits together.
Add the sum to the sum of the digits ...
- 233