Question

c语言 调用函数例子，为什么会报错啊？

#include "stdio.h"
main()
{
printst();
print_hello();
printst();
}
printst()
{
printf("****************\n");
}
print_hello()
{
printf("HELLO!\n");
}

我想输出如下：
****************************
HELLO!
****************************
错误为
: error C2065: 'printst' : undeclared identifier
: error C2065: 'print_hello' : undeclared identifier
: warning C4508: 'main' : function should return a value; 'void' return type assumed
: error C2373: 'printst' : redefinition; different type modifiers
: warning C4508: 'printst' : function should return a value; 'void' return type assumed
: error C2373: 'print_hello' : redefinition; different type modifiers
: warning C4508: 'print_hello' : function should return a value; 'void' return type assumed
执行 cl.exe 时出错.

我用的vc6.0

Answer 1

#include "stdio.h"
void main(){
void printst();
void print_hello();
printst();
print_hello();
printst();
}
void printst(){
printf("****************\n");
}
void print_hello(){
printf("HELLO!\n");
}