C program to print length of string without using inbuilt functions

PROGRAM:

#include<stdio.h>
int length(char[]);
int main()
{
    char str[50];
    printf("Enter a string\n");
    scanf("%s",str);
    printf("String length=%d",length(str));
    return 0;
}
int length(char s[])
{
    int i=0,count=0;
    while(s[i]!='\0')
    {
        i++;
        count++;
    }
    return count;
}

OUTPUT:

Enter a string
CPROGRAM
String length=8