study/C_C++/sources/c_and_pointer/chapt2/practise/main.c

#include <stdio.h>
#include "increment.c"
#include "negate.c"

int main()
{
    printf("increment(10) = %d\n", increment1(10));
    printf("negate(10) = %d\n", negate1(10));
    return 0;
}