C library functions - isprint ()

C standard library - <ctype.h>

description

C library functionsint isprint (int c) Check preaching character is printable.Non-printable characters control characters characters.

statement

Here is () statement isprint function.

int isprint(int c);

parameter

• c - This was a test of character.

return value

If c is a printable character, the function returns a nonzero value (true), otherwise it returns 0 (false).

Examples

The following example demonstrates isprint () function is used.

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

int main()
{
   int var1 = 'k';
   int var2 = '8';
   int var3 = '\t';
   int var4 = ' ';
    
   if( isprint(var1) )
   {
      printf("var1 = |%c| 是可打印的\n", var1 );
   }
   else
   {
      printf("var1 = |%c| 是不可打印的\n", var1 );
   }
   if( isprint(var2) )
   {
      printf("var2 = |%c| 是可打印的\n", var2 );
   }
   else
   {
      printf("var2 = |%c| 是不可打印的\n", var2 );
   }
   if( isprint(var3) )
   {
      printf("var3 = |%c| 是可打印的\n", var3 );
   }
   else
   {
      printf("var3 = |%c| 是不可打印的\n", var3 );
   }
   if( isprint(var4) )
   {
      printf("var4 = |%c| 是可打印的\n", var4 );
   }
   else
   {
      printf("var4 = |%c| 是不可打印的\n", var4 );
   }
   
   return(0);
}   

Let's compile and run the above program, which will result in the following:

var1 = |k| 是可打印的
var2 = |8| 是可打印的
var3 = |	| 是不可打印的
var4 = | | 是可打印的

C standard library - <ctype.h>