You can find the length of a string using the strlen function by including the string.h header file. But what if you want to find the length without using strlen function, then this C program will help you obtaining it.
#include <stdio.h>
int main()
{
char str[100],i;
gets(str);
for(i=0; str[i]!='\0'; ++i);
printf("\nLength of string: %d",i);
return 0;
}
Output