Return a char * in c and send it as a parameter to another function

Asked Oct 11 '17 at 12:43

Active Oct 11 '17 at 12:55

Viewed 457 times

I would like to know how can I return a string in c and then send it as a parameter to another funcion. For example, in those functions:

This is the function that returns a char *:

char * read(){
    char c[4];
    printf("Write the string:\n");
    scanf(" %[^\n]", c);
    return c;
}

And this one takes it as a parameter and prints it:

void printc(char *a){
    printf("%s", a);
}

I've tried doing:

printc(read());

But it doesn't work. What's the best way to do this?

edited Oct 11 '17 at 12:53

eduardosufan

asked Oct 11 '17 at 12:43

kalia

1

@kalia "The best way" is to declare the array outside the functions and pass it as an argument to the both functions.:) – Vlad from Moscow Oct 11 '17 at 12:45
1. *"Doesn't work"* is not a proper problem description - be as precise as you can be. 2. Your `read` function is returning a pointer to a local array, whose lifetime ends after the function ends – UnholySheep Oct 11 '17 at 12:45
2

`char c[4];` --> `static char c[4];` – BLUEPIXY Oct 11 '17 at 12:46
@VladfromMoscow But I would like to know if there's any way in c to pass a string between two functions – kalia Oct 11 '17 at 12:50
@kalia And I wrote how to do this. – Vlad from Moscow Oct 11 '17 at 12:58
@VladfromMoscow okay, thank you. – kalia Oct 11 '17 at 13:00
@BLUEPIXY yea, lets go `static` and wait for the awkward moment when someone decides to use `read` for some purpose inside the `printc` implementation. – grek40 Oct 11 '17 at 13:21

0 Answers0