C 库函数isgraph()检查字符是否为图形字符。
已知具有图形表示的字符是图形字符。例如: ':' ';' “?” '@' 等等。
语法 -
返回值 -如果 ch 是除空格以外的任何可打印字符,则函数返回非零值,否则返回 0。
对于 ASCII 环境,可打印字符的范围是0X21到0X7E。
代码 -
输出 -
输出 -
#include <ctype.h>
int isgraph(int ch);
// code to check graphical character
#include <stdio.h>
#include <ctype.h>
int main()
{
char var1 = 'g';
char var2 = ' ';
char var3 = '1';
if (isgraph(var1))
printf("var1 = |%c| can be printedn", var1);
else
printf("var1 = |%c| can't be printedn", var1);
if (isgraph(var2))
printf("var2 = |%c| can be printedn", var2);
else
printf("var2 = |%c| can't be printedn", var2);
if (isgraph(var3))
printf("var3 = |%c| can be printedn", var3);
else
printf("var3 = |%c| can't be printedn", var3);
return (0);
}
var1 = |g| can be printed var2 = | | can't be printed var3 = |1| can be printed代码 -
// code to print all Graphical Characters
#include <stdio.h>
#include <ctype.h>
int main()
{
int i;
printf("In C programming All graphic "
"characters are: n");
for (i = 0; i <= 127; ++i)
if (isgraph(i) != 0)
printf("%c ", i);
return 0;
}
在 C 编程中所有图形字符是: !" # $ % & ' ( ) * +, - . / 0 1 2 3 4 5 6 7 8 9 : ; ? @ABCDEFGHIJKLMNOPQRSTU VWXYZ [ ] ^ _ ` abcdefghijklmn opqrstuvwxyz { | } ~