ispunct() - C函式

C庫函式 int ispunct(int c) 檢查傳遞的字元是否是標點符號品格的標點符號是任何圖形字元（如isgraph）這是不是字母，數位（isalnum），。

宣告

`int ispunct(int c);`

引數

• c -- 這是要檢查的字元。

例子

```#include <stdio.h>
#include <ctype.h>

int main()
{
int var1 = 't';
int var2 = '1';
int var3 = '/';
int var4 = ' ';

if( ispunct(var1) )
{
printf("var1 = |%c| is a punctuation character
", var1 );
}
else
{
printf("var1 = |%c| is not a punctuation character
", var1 );
}
if( ispunct(var2) )
{
printf("var2 = |%c| is a punctuation character
", var2 );
}
else
{
printf("var2 = |%c| is not a punctuation character
", var2 );
}
if( ispunct(var3) )
{
printf("var3 = |%c| is a punctuation character
", var3 );
}
else
{
printf("var3 = |%c| is not a punctuation character
", var3 );
}
if( ispunct(var4) )
{
printf("var4 = |%c| is a punctuation character
", var4 );
}
else
{
printf("var4 = |%c| is not a punctuation character
", var4 );
}

return(0);
}   ```

```var1 = |t| is not a punctuation character
var2 = |1| is not a punctuation character
var3 = |/| is a punctuation character
var4 = | | is not a punctuation character```