C program to count the number of characters in a given string using strlen () function

#include <stdio.h>
#include <string.h>
 
int main()
{
	char a[100];
	int length;
 
	printf("Enter a string to calculate it's length\n");
	gets(a);
 
	length = strlen(a);
 
	printf("Length of entered string is = %d\n", length);
 
	return 0;
}

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