Strings in C++

1. Write a function called togglel) that accepts a string, and an integer. The function checks whether the character at the position indicated by the passed integer is a letter or not. If it is a letter, it toggles its case. So, if it is a lowercase letter, make it an upper case, and if it is an uppercase letter make it a lower case. If the character is not a letter, it is left with no change In the main() function, prompt the user to enter a string, and the position of the character to be toggled, then print out the string after it has been changed. 2. Write a function called insertRandomNumber) that accepts a string, and an integer. The function inserts a random number, in the range 10-91, in the string at the position indicated by the passed integer. In the main() function, prompt the user to enter a string, and the position at which the random number should be inserted! Hint: you will need to use to string function. Write a function called capitalize() that capitalizes the second and third letters of a string. If the string length s less than three, return the same string. 3. In the main) function, prompt the user to enter a string, and print out the string after t has been processed