Chapter 9, Problem 6E

Write a function called r to remove a specified number of characters from a character string. The function should take three arguments: the source string, the starting index number in the source string, and the number of characters to remove. So, if the character array t contains the string̎ the call

r

has the effect of removing the characters “wrong” (the word “wrong” plus the space that follows) from the array t. The resulting string inside t is then̎ .