C 实战练习题目34

 1 #include <stdio.h>
 2 void hello_world(void)
 3 {
 4     printf("Hello, world!\n");
 5 }
 6 void three_hellos(void)
 7 {
 8     int counter;
 9     for (counter = 1; counter <= 3; counter++)
10         hello_world();/*调用此函数*/
11 }
12 int main(void)
13 {
14     three_hellos();/*调用此函数*/
15 }

Hello, world!
Hello, world!
Hello, world!