fork download

copy

#include <stdio.h>
 #include <stdlib.h>
 
 
int main()
{
    void fun1(int);
    void fun2(int);
    int fun3(int); 
 
    int num = 5;
    fun1(num);
    fun2(num);
}
 
void fun1(int no)
{
    no++;
    fun3(no);
}
 
void fun2(int no)
{
    no--;
    fun3(no);
 
}
 
int fun3(int n)
{
    printf("%d",n);
}

prog.c: In function 'fun1':
prog.c:19:5: error: implicit declaration of function 'fun3' [-Werror=implicit-function-declaration]
     fun3(no);
     ^
prog.c:9:9: note: previous declaration of 'fun3' was here
     int fun3(int); 
         ^
prog.c: In function 'fun3':
prog.c:32:1: error: control reaches end of non-void function [-Werror=return-type]
 }
 ^
cc1: all warnings being treated as errors

Standard output is empty