范例:
/*将字符串str[]中内含的空格字符找出,并显示空格字符的ASCII码*/
#include <ctype.h>
main()
{
char str="123c @# FD\tsP[e?\n";
int i;
for(i=0;str[i]!=0;i++)
if(isspace(str[i]))
printf("str[%d] is a white-space character:%d\n",i,str[i]);
}
执行 str[4] is a white-space character:32
str[7] is a white-space character:32
str[10] is a white-space character:9 /* \t */
str[16] is a white-space character:10 /* \t */ |