Program to find the length of the string using strlen() function

#include<stdio.h>
void main()
{
char str[50];
int len;
clrscr();
printf("Enter the text: ");
scanf("%s", str);
len=strlen(str);
printf("Length of the string = %d", len);
getch();
}

Program to find the length of the string without using strlen() function

#include <stdio.h>
void main()
{
char s[1000],i;
clrscr();
printf("Enter a string: ");
scanf("%s",s);
for(i=0; s[i]!='\0'; ++i);
printf("Length of string: %d",i);
getch();
}