The following source code will print out the length of a string in C Programming

#include <stdio.h>
main()
{  char s[81];
printf("Enter string: ");
scanf("%s", s);
printf("length = %d\n", len(s));
}
int len(char s[])
{  if(*s)
        return 1+len(++s);
return 0;
}

The following code will replace a character or a word with some other character or a word. This is accomplished by the replace function in C#.

using System;
using System.Text.RegularExpressions;

string strReplace;
strReplace = "This is a test string.";
strReplace = Regex.Replace(strReplace, " is", " was");