#include<stdio.h>

int joneResult(int x,int y,int z)

{

int sum = (x+y+z);

return sum/3;

}

void jackResult(int x,int y,int z)

{

printf("我算不出來\n");

return;

}

int main()

{

int a,b,c;

a=10;

b=20;

c=30;

int jR=joneResult(a,b,c);

printf("Jone的運算結果是: %d\n",jR);

? ? printf("Jone的運算結果是:");

jackResult(a,b,c);

return 0;

}