\* C program to find the length of a String without using Library Function *\
# include < stdio.h >
# include < conio.h >
int main( )
{
char s[1000] ;
int i ;
printf("\n Enter a string: ") ;
scanf("%s", s) ;
for(i = 0; s[i] != '\0'; ++i) ;
printf(" Length of string is : %d", i) ;
return (0) ;
}