overloaded += operator for the overloaded

Kindly fix the errors in this assignmentI'm getting an error on error: expected ' ' before ' '} else if (grade == 'B') {  (I cannot see the error)[ Here is the assignement ] Write an structure that will print a message based on the grade ( A,B,C,D,or F). Do this first using an if statement. Then do it using a switch statement. The grade and message are as follows. • A Excellent Job • B Very Good • C Average • D Need more effort   ------- code -------#include <stdio.h> int main() { char grade;           printf("please enter your grade (A, B,C,D, or F): ");         scanf("%c", &grade);   // Using if statement if (grade == 'A'){         printf("Excellent job!\n");{ } else if (grade == 'B') {         printf("Very good!\n"); } else if (grade == 'C') {         printf("Average. n"); } else if (grade == 'D') {         printf("You need more effort.\n"); } else if (grade == 'F') {         printf("You need to get some help. \n"); } else {         printf("Invalid grade entered.\n"); } //…

1. Prove the following using an inductive argument: (2i-1)=n² i=1

Modify the craps program to allow wagering inside of C#, and explain each step (reject if you can't). Initialize variable Balance to 1000 dollars. Prompt the player to enter a wager. Check whether the wager is less than or equal to Balance and, if not, have the user reenter the wager until a valid wager is entered. After a valid wager is entered, run one game of craps. If the player wins, increase Balance by wager, and print the new Balance. If the player loses, decrease Balance by wager, print the new Balance, check whether Balance has become zero and, if so, print the message “Sorry. You busted!” (explain steps as much as possible so I can understand plz).The program to modify has the code listed below:// Craps class simulates the dice game craps.using System; class Craps{// create random-number generator for use in method RollDiceprivate static Random randomNumbers = new Random(); // enumeration with constants that represent the game statusprivate enum Status {Continue, Won, Lost}…