fork download

#ifndef FUNCTION04_H_
#define FUNCTION04_H_
 
#include <stdio.h>
 
void sort_by_abs (int array[], int size);
 
int main() {
    int size;
    scanf("%d", &size);
    int array[100000];
    for (int i = 0; i < size; i ++) {
        scanf("%d", &array[i]);
    }
    sort_by_abs(array, size);
    for (int i = 0; i < size; i ++) {
        printf("%d%c", array[i], " \n"[i == size - 1]);
    }
    return 0;
}
#endif // FUNCTION4_H_
 

prog.c: In function ‘main’:
prog.c:10:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &size);
     ^~~~~~~~~~~~~~~~~~
prog.c:13:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &array[i]);
         ^~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /home/OReIGZ/ccNnROtC.o: in function `main':
prog.c:(.text.startup+0x70): undefined reference to `sort_by_abs'
collect2: error: ld returned 1 exit status

Standard output is empty