length of the string in c program

Program to find the length and change the case

 

#include<stdio.h>

#include<string.h>

void main()

{

char a[100];

int length;

clrscr();

printf("Enter a string to calculate it's length\n");

gets(a);

length = strlen(a);

printf("Length of entered string is = %d\n",length);

printf("%s\n",strlwr(a));

printf("%s\n",strupr(a));

getch();

}