Question

Write a C program as follows:

• Single source code file
• Requests the user to input two integer numbers
• Requests the user to make a choice between 0 (add), 1 (subtract), or 2 (multiply)
• Declares three separate functions
• Uses a pointer to these three functions to perform the requested action
• Outputs the result to the screen

Submit your program source code file to this assignment.

Sample Output

Enter first integer number:
15
Enter second integer number:
10
Enter Choice: 0 for add, 1 for subtract and 2 for multiply
2
Multiplication is 150

PLEASE INCLUDE LOTS OF COMMENTS. These comments help me to learn the assignment so that I can replicate the results on a test in the future. Thank you!

Answer 1

ANSWER:

#include<stdio.h>

void int2str(int n, char str[]){
   if(n < 10){
      str[0] = '0'+n;
      str[1] = '\0';
   }
   else{
      str[0] = '0' + (n/10);
      str[1] = '0' + (n%10);
      str[2] = '\0';
   }
}
int add(int a, int b){
   return a+b;
}

int subtrace(int a, int b){
   return a-b;
}

int mul(int a, int b){
   return a*b;
}


int main() {
   int a,b;
   int ch;
   printf("Enter first integer number: ");
   scanf("%d",&a);
   printf("Enter second integer number: ");
   scanf("%d",&b);
   printf("Enter Choice: 0 for add, 1 for subtract and 2 for multiply: ");
   scanf("%d",&ch);
      if(ch == 0)
         printf("The sum is %d\n",add(a,b));
      else if(ch == 1)
         printf("The difference is %d\n",subtrace(a,b));
      else if(ch == 2)
         printf("Multiplication is %d\n",mul(a,b));
      else
         printf("Invalid operator\n");
   
   return 0;
}