Question

I am beginner in C,
I am trying to write a function to return a string.
I know that in C we don’t have string data type. instead of these I try to use an array of chars but It’s not my solution.

char[] my_function(int x){
    if(x>0)
        return 'greaterThanZero';
    else
        return 'smallerOrEqualOfZero';
}

please help me.

Answer 1

void my_function(int x, char **ret){
    if(x>0)
        *ret= "greaterThanZero";
    else
        *ret= "smallerOrEqualOfZero";
}

and in the main

int main() {
   char *string;
   my_function(1, &string);
   printf("%s",string);
}

Another way:

void my_function(int x, char *T){
        if(x>0)
            strcpy(T,"greaterThanZero");
        else
            strcpy(T, "smallerOrEqualOfZero");
    }

and in the main

int main() {
   char string[100];
   my_function(1, string);
   printf("%s",string);
}