array return type

Question

#include
#include
#define MAX 30

void push(char );


char stack[MAX];
int tos=0;

int main(){
    char str[]=\"Arijit Saha\";
    char *f         


        

Answer 1

c:14: error: previous implicit declaration of 'rev' was here

Your error is because you didn't generate a prototype for rev() before you used it in your main(). Either move your function above main or add a prototype.

c28: warning: function returns address of local variable

Your warning is because you are trying to return the address of a local variable, you can't do that. Local variables are out of scope when you leave the function, so you need to do something else (such as use a dynamic array via adding malloc()/free() calls)