This is in C languange and arrays are not allowed to be used. Also, please comme

Question

This is in C languange and arrays are not allowed to be used.

Also, please comment on the steps used, thank you.

This program will quiz the user on the basic arithmetic problems:

when the program runs, the user will be given a menu

of the following choices:

1. Give me an addition problem.

2. Give me a subtraction problem.

3. Give me a multiplication problem.

4. Quit.

The user's choice is specified with the corresponding integer.

(Note: I've left out division so we can just work with

integers.) If the user gives an integer outside of 1..4, the

program prints an error message and re­prints the menu.

For options 1­3, your program will generate a problem for the

user to solve. For example an addition problem might look like:

Complete: 12 + 22 =

After displaying the problem, the program reads an answer from

the user and reports if it is correct or not.

If the answer is correct, the program congratulates the user and

re­prints the menu and awaits the user’s next choice.

If the answer is incorrect the program will ask the user to try

again, but only up to a maximum of 5 attempts. If the user gives

5 incorrect answers, the program reports the correct answer with

an appropriate message and the program re­prints the menu and

awaits user input.

Your program will use non­negative numbers in the range [0..100]

(inclusive) for the problems given to users. To generate such

numbers at "random" you can use the rand() and srand() library

functions. The rand() function returns an integer. To get an

integer in the specified range, you can use the mod operator:

a = rand() % 101; // % 101 gives a number in 0..100

The rand() function produces a "pseudo­random" number. To "seed"

the generator so it doesn't produce the same sequence each time

the program is run, add this magic code to the top of main:

srand( (unsigned)time(NULL));

You will need to include the time.h header file as well:

#include <time.h>

Explanation / Answer

# include <stdio.h>
# include <conio.h>
# include <time.h>
int main(){ //main loop
   int ans,ans2,i;
   srand( (unsigned)time(NULL)); //srand function that will not repeat same numbers
   int a = rand() % 101; //first random number
   int b = rand() % 101;//second random number
   do{ //while loop
   printf(" 1. Give me an addition problem");
   printf(" 2. Give me substraction problem");
   printf(" 3. Give me multiplication problem");
   printf(" 4. Exit ");
   scanf(" %d",&ans);
   switch(ans){ //switch case
   case 1 :
       printf(" %d + %d =",a,b);
       scanf("%d",&ans2);
       if(ans2==a+b){
           printf(" You enter correct :");
       }else{
           printf(" Please try again :");
           for(i=5;i>0;i--){
               scanf(" %d",&ans2);
               if(ans2==a+b){
                   printf(" You enter correct :");
                   break;
               }else{
                   printf(" Please try again in %d times: ",i-1);
               }
              
           }
           printf(" Answer is %d ",a+b);
       }
       a=0;
       b=0;
       break;
       case 2:
           printf(" %d - %d = ",a,b);
           scanf("%d",&ans2);
           if(ans2==a-b){
               printf(" You are right");
               }else{
                   printf(" Please try again : ");
                   for(i=5;i>0;i--){
               scanf(" %d",&ans2);
               if(ans2==a-b){
                   printf(" You are right :");
                   break;
               }else{
                   printf(" Please try again in %d times: ",i-1);
               }
              
           }
           printf(" Answer is %d ",a-b);
               }
               a=0;
               b=0;
           break;
           case 3:
               printf(" %d * %d");
               scanf("%d",&ans2);
               if(ans2==a*b){
                   printf(" you are right ");
                   }else{
                       printf("Please try again ");
                       for(i=5;i>0;i--){
               scanf(" %d",&ans2);
               if(ans2==a*b){
                   printf(" You are right :");
                   break;
               }else{
                   printf(" Please try again in %d times: ",i-1);
               }
              
           }
           printf(" Answer is %d ",a*b);
                   }
                   a=0;
                   b=0;
               break;

case 4:

break;
               default :
                   printf(" You enterd invalid choice, please try again: ");
                   break;
           }

}while(ans!=4);
  
}

Expected output :

1. Give me an addition problem
2. Give me substraction problem
3. Give me multiplication problem
4. Exit 1

30 + 33 =63

You enter correct : 1. Give me an addition problem
2. Give me substraction problem
3. Give me multiplication problem
4. Exit 1

0 + 0 =5

Please try again :
5

Please try again in 4 times: 5

Please try again in 3 times: 5

Please try again in 2 times: 5

Please try again in 1 times: 5

Please try again in 0 times:
Answer is 0
1. Give me an addition problem
2. Give me substraction problem
3. Give me multiplication problem
4. Exit 4

--------------------------------
Process exited with return value 4
Press any key to continue . . .

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