va_startva_endva_arg 实现可变长参数

Posted 2021-01-25 muzixiaofeng

/*******************************/
//va_start、va_end、va_arg 实现可变长参数
/*******************************/

#include <stdarg.h>
#include <stdio.h>

#define END_NUM -1
void trease_array(int first_num,...)
{
int result1 = 0;
int result2 = 0;
int temp = 0;

va_list ap;

va_start(ap,first_num);

result1 =first_num;

while( (temp = va_arg(ap,int)) != END_NUM)
{
result1 += temp;
}

printf("%d ",result1);

va_end(ap);
}

int main(void)
{
trease_array(1,2,3,4,5,END_NUM);
return 0;
}