Questions tagged [code]
The code tag has no usage guidance.
38
questions
0
votes
0
answers
20
views
What do you think about my code here?
#include <cs50.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
long long credit_num;
credit_num = get_long_long("credit number: "...
-1
votes
0
answers
14
views
cash does not work anymore
Yesterday, my code worked. Today, the code doesn't work anymore. Both times I tried check 50. Yesterday everything was alright but today it wasn't. What happened?
0
votes
1
answer
48
views
practice problems week 3. Sort temperature. And my result is all the temperature is sorted but the name of the city is not
void sort_cities(void)
{
// Add your code here
for (int i = 0; i <= NUM_CITIES - 1; i++)
{
if (temps[i].temp < temps[NUM_CITIES - 1].temp)
{
int temp = ...
0
votes
0
answers
57
views
I don't understand the answer to the pset3 atoi practice problem
#include <cs50.h>
#include <ctype.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
int convert(string input);
int number = 0;
int main(void)
{
string ...
- 25
0
votes
1
answer
10
views
Hi all, there is something wrong with my code below , I cant get my head around the compiling errors thanks!
#include <stdio.h>
#include <cs50.h>
int main(void)
{
//Prompt for start size
int start;
do
{ start = get_int("start: ");
}
while (start < 9 );
// Prompt for end size
int end;
...
- 11
0
votes
1
answer
11
views
Getting " error: declaration shadows a local variable" but i don't know why
int wordsize = atoi(argv[1]);
int status[wordsize];
for (int b = 0, wordsize < b; b++)
{
status[b] = 0;
}
The error happens specifically at the word "wordsize" in the for loop. I'm ...
- 25
0
votes
0
answers
14
views
cs50 string not registering
stack.imgur.com/OShHG.png
I'm following along with the cs50 course why is my string not registering and changing color like the example code?
0
votes
1
answer
225
views
Getting the error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type] and i don't know why
#include <cs50.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
bool only_digits(string s);
int main(int argc, string argv[])
{
if (...
- 25
0
votes
1
answer
17
views
Getting error expected ')' and I don't know why
if ((word{i} >= 'a' && word{i} <= 'z') || (word{i} >= 'A' && word{i} <= 'Z'))
{
while (points{j} < word{i})
{
j++;
}
...
- 25
0
votes
1
answer
13
views
How do I combine variables and words in a sentance?
printf("%i\n", quarters, "quarters,", "%i\n", dimes, "dimes,", "%i\n", nickels, "nickels", "%i\n", pennies, "pennies.");...
- 25
0
votes
0
answers
75
views
I get 50% at Final Project
I just uploaded my final project - Note taking - and somehow get 50%. I followed all instructions: uploaded the video, made a README file (about 120 word), but still nothing happened. Do you have any ...
0
votes
1
answer
54
views
The "Code Command" did not work for me in "code mario.c" - August 28th, 2022
This is my first post here. I'd like to know why the "code command" did not work for me (code mario.c). I was trying to create a file as the professor did. This command is used by the ...
- 3
0
votes
1
answer
331
views
How do I get rid of the "expression result unused" error?
I am trying to get it to where if input "n" and "x" are the same number it will display "years = 0" if not it will run else statement. Instead it was running both the if ...
0
votes
1
answer
112
views
make: *** No rule to make target 'cash'. Stop
I have this problem. I'm trying to run this program but it keeps showing me this message and it confuses me since I have the file cash.c saved in the pset1 directory and cash (folder).
I've looked for ...
1
vote
2
answers
42
views
Does somebody explain %d, %s, etc
Couldn't find it either googling it or in the lectures so far.
Does somebody have the complete options and what they are for?
Thank you very much.
- 29
0
votes
1
answer
19
views
I have a problem regarding " Condition"
Well, I am learning the C program. When I wrote a command I got an error message but I don't know why. The code runs like this:-
if (answer == "something")
[here, the 'answer' is a string ...
- 3
0
votes
1
answer
18
views
Trying to do pset 2, but it doesn't even accept my input. What am I doing wrong?
#include <stdio.h>
#include <cs50.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
int check(int c, string key);
int main(int argc, string argv[])
{
int ...
0
votes
2
answers
518
views
how do i write pesudocode.txt for Mario? (less comfortable)
After I input:
mkdir ~/pset1/mario
its asking me to write pseudocode.txt and i am not sure how i can do that. I've tried inputting the pseudocode.txt and that gives me "command not found"
0
votes
1
answer
95
views
Syntax Highlighting Error
I am working on my mario problem. I write my code in C, but it's not getting highlighted, meaning the program doesn't understand it. How can I get it to understand my code? for example #include is in ...
0
votes
1
answer
182
views
Pset7 Movies Q12: I don't get what's wrong
I can't figure out why my pset7 movies Q12 code isn't working. Can anyone tell me why?
Here is my code:
SELECT DISTINCT title FROM movies, stars, people WHERE movie_id IN (SELECT movie_id FROM stars ...
- 1
0
votes
1
answer
431
views
Error: use of undeclared identifier 'j'
My code looks fine but "make mario" insists that "Error: use of undeclared identifier 'j'".
#include <cs50.h>
#include <stdio.h>
int main(void)
{
int n;
do
{
n = get_int ("Height: "...
- 19
0
votes
1
answer
72
views
Mario Less Loops doubt and code review
I have attempted the PSET 1 of 2020 CS50x and have a couple of doubts. Could someone check if the following code for Mario less one is correct. If it is I also had a question that what should I put ...
- 1
0
votes
1
answer
15
views
Why is the value 16,432 appearing, and why is it getting reduced each time I run the program?
So I was following along the week one lecture, and I was trying to replicate the average-taking program, when I made a slightly silly mistake- I used the average function within the for loop.
#...
0
votes
1
answer
270
views
Greedy(less comfortable) questions/thoughts/input/advice on my programm
Hello
I am relatively new to programming and C in general.
I have left the comments next to the points I have questions to, please don't give me any solutions, as I really want to learn and ...
0
votes
2
answers
127
views
Help! CS50 Error message not making sense at all
I am in week 1 on CS50 2017, and in the lecture he presents a code written as follows:
#include <cs50.h>
#include <stdio.h>
int main(void);
{
int n = 0;
while (true)
{
...
0
votes
1
answer
42
views
pset6 - greedy doesn't print answer- just returns the input. Where have I gone wrong?
import cs50
while True:
print ("O! Hail!, How Much Change Is Owed?")
n = cs50.get_float()
if n >= 0:
break
q = 25
q1 = 0
d = 10
d1= 0
ni = 5
ni1 = ...
0
votes
1
answer
346
views
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
46
views
why doesnt this code print the number of bottles of water used? it only stops after prompting user for number of minutes
include
include
int main(void)
{
printf("duration of shower in minutes :\n");
int m = GetInt();
printf("minutes : %i\n", m);
int b = b;
int bottles(int b);
{
...
3
votes
4
answers
1k
views
Problem with format codes
I'm trying to get cs50 IDE to print the size of char, double, float and int. This is what I wrote:
#include <stdio.h>
int main(void)
{
char c;
double d;
float f;
int i;
...
- 31
0
votes
1
answer
66
views
Whats wrong with Vigenere code
This is the cleanest way i can think of of implementing vigenere, but i don't see whats wrong.. the code should work fine.. but its not. Please help
string k = argv[1];
int keyLength = strlen(k);
int ...
0
votes
1
answer
66
views
week7 lecture2 source code speller.php not found
David showed the php version of speller.c but I can't find the code neither on edx, nor on cs50.harvard.edu
https://cs50.harvard.edu/lectures/7/w/src
https://courses.edx.org/courses/course-v1:...
- 235
0
votes
1
answer
127
views
What's wrong with this code for the Caesar Cipher?
I created this Caesar Cipher program, but for some reason, I can't find its bug.
Here is the code. It compiles, but it just prints out the same thing I enter, for any key.
#include <cs50.h>
#...
- 103
0
votes
1
answer
37
views
server gives same error code with different conditions
Below I'm validating the request-line conforms to the spec (printf statements were telling me the errors were from these if statements).
The first 3 blocks worked fine independently and together. (e....
- 33
1
vote
3
answers
510
views
Help with pset1 mario, I don't understand what's wrong with my code
Whenever I do check50 on this code, it gives me lots of errors, and I'm not sure what I'm doing wrong.
- 11
-2
votes
3
answers
33
views
what is wrong in this program?
#include<cs50.h>
#include<stdio.h>
/**
* program to check my name
*/
int main(void)
{
printf("tell me your name\n");
string names=GetString();
if (names = "peter")
printf(...
1
vote
2
answers
59
views
Submitting Source Code?
When I submit a pset it says I need to submit a source code as well...where can i find that?
I think thats why my psets arent getting graded.
Please help
- 61
1
vote
1
answer
87
views
code doesn'work, please help
I tried to write this little piece of code, but I couldn't figure it out entirely. Can someone help me with the missing parts?
#include <stdio.h>
#include <cs50.h>
int main(void)
{
...
- 11
0
votes
1
answer
630
views
How do I unzip source code?
I've downloaded the Source Code files for Lecture 2 to the jharvard directory. How do I unzip them?
- 1