Question

How to use iscntrl() function to check whether a character is a control character in C

Answer 1

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

int main(int argc, char **argv) 
{
	int i = 0, count = 0;
	char s[] = "Example \nwww \t   def      ?\n";
  
	while(s[i])
	{
		if (iscntrl(s[i]))
			count++;
		i++;
	}
	
	printf("count = %d control character", count);
  
    return 0;
}
   
 
/*
run:
 
count = 3 control character
 
*/

 

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