Write a Program Using strlen() function for string

#include <stdio.h>

#include <string.h>

int main()

{

    char a[20]="Program";

    char b[20]={'P','r','o','g','r','a','m','\0'};

    char c[20];

    printf("Enter string: ");

    gets(c);

    printf("Length of string a = %d \n",strlen(a));

    //calculates the length of string before null charcter.

    printf("Length of string b = %d \n",strlen(b));

    printf("Length of string c = %d \n",strlen(c));

    return 0;

}

/*

Output

Enter string:

Length of string a = 7

Length of string b = 7

Length of string c = 6

*/