C语言函数参数不定的例程
#include <stdio.h>#include <stdrag.h>
void display(int,int, ...);
void main()
{
display(1,2,5,6);
display(2,4,'A','a','b','c');
display(3,3,2.5,299.3,-1.0);
}
void display(int type,int num, ...)
{
int i,j;
char c;
float f;
va_list ptr;
va_start(ptr,num);
printf("\n");
switch(type)
{
case 1:
for( j = 1; j<= num; j++ )
{
i = va_arg(ptr,int);
printf("%d ",i);
}
break;
case 2:
for( j = 1; j <= num; j++ )
{
c = va_arg(ptr,char);
printf("%c ",c);
}
break;
case 3:
for( j = 1; j <= num; j++ )
{
f = (float)va_arg(ptr,double);
printf("%f ",f);
}
}
}
文档来源：51CTO技术博客https://blog.51cto.com/u_6220803/3198546
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