Questions tagged [main]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
1answer
77 views

CS50 Pset1 credit card

Very small question: Most probably you have seen the original text of the problem, so I'll just paste here the small extract: "So that we can automate some tests of your code, we ask that your ...
0
votes
0answers
707 views

speller.c:217:5: error: redefinition of 'main' int main

I actually received two error messages: speller.c:217:5: error: redefinition of 'main' int main(int argc, char *argv[]) ^ speller.c:20:5: note: previous definition is here int main(int argc, ...
0
votes
3answers
56 views

factorial code;why does main function not return answer?

In the following code, my last statement in main function is return fact(n) does not work. But if I substitute it with printf ("Factorial of %d = %d\n", n, fact(n)); it works My question is if main ...
0
votes
1answer
488 views

Use of functions and variable declarations outside main() on pset1 greedy

I have completed greedy from pset1 and I still doubts about the variable declarations and the function position. What is the difference if they are declared inside or outside the main function? #...
0
votes
1answer
70 views

space between function name and variables e.g. int main (void)

I checked the style guide https://manual.cs50.net/style/ and the C99 Standard https://en.wikipedia.org/wiki/C99 And neither explicitly states the best format but both implicitly write out main as so ...
0
votes
1answer
592 views

Difference between return 0; and return (0);

I am working through the chapters on 'absolute beginners guide to c' Sometimes for the main function return statement he uses: return 0; and other times return (0); I am assuming there is no ...
2
votes
2answers
69 views

Could we declare the main function as “main () {}” rather than “int main (void) {}”?

In the examples in week 1, we declare the main function as follows: int main (void) { // code } Why do we use int? Is it wrong to use the following instead? main () { // code }
0
votes
1answer
254 views

Breakout main function will not move the paddle or the ball

I have created the paddle, ball, and bricks, but when I write the code to make paddle move nothing happens. I tried to write the ball movement code also but that doesn't work either. I think I am ...
1
vote
1answer
3k views

pset3 helpers c, linear search

bool search(int value, int values[], int n) { // TODO: implement a searching algorithm for (int i = 0; i < n; i++) { if(values[i] == value) { return i; ...
1
vote
2answers
2k views

Is a Semicolon Required After main()'s Signature?

When trying to compile my mario.c and greedy.c programs, Clang compiler error messages indicate that a semicolon is needed after int main(void). The C book that I am using (i.e., C Step by Step by ...
2
votes
1answer
2k views

why do we pass arguments to the main function?

I did not understand that ,why do we pass arguments to the main function? for example in pset3 generate.c main {int argc,string argv[]}. please explain?