范例:
/* 判断str字符串中哪些为可打印字符包含空格字符*/
#include<ctype.h>
main()
{
char str[]="a5 @;";
int i;
for(i=0;str[i]!=0;i++)
if(isprint(str[i])) printf("str[%d] is printable
character:%d\n",i,str[i]);
}
执行 str[0] is printable character:a
str[1] is printable character:5
str[2] is printable character:
str[3] is printable character:@
str[4] is printable character:; |