gayculator

#include <stdio.h>

main()
{

  float fNum1 = 0;
  float fNum2 = 0;
  float fSolution = 0;

  int iNum1 = 0;
  int iNum2 = 0;
  int iSolution = 0;

  int iChoice = 0;

  printf("\n\tCalculator! : By John Martinez\n");
  printf("\n\n\tMain Menu : What would you like to do?\n");
  printf("\n(1) Addition");
  printf("\n(2) Subtraction");
  printf("\n(3) Multiplication");
  printf("\n(4) Division");
  printf("\n(5) Modulus (integers only)");
  printf("\n(6) Test if prime (integers only)");
  printf("\n(7) Exit");

  printf("\nPlease choose an operation: ");
  scanf("%d", &iChoice);

  switch(iChoice){

  case 1: //Addition
    printf("Enter the first number: ");
    scanf("%f", &fNum1);
    printf("Enter the second number: ");
    scanf("%f", &fNum2);
    fSolution = fNum1 + fNum2;
    printf("%.2f + %.2f = %.2f", fNum1, fNum2, fSolution);
    break;
  case 2: //Subtraction
    printf("Enter the first number: ");
    scanf("%f", &fNum1);
    printf("Enter the second number: ");
    scanf("%f", &fNum2);
    fSolution = fNum1 - fNum2;
    printf("%.2f - %.2f = %.2f", fNum1, fNum2, fSolution);
    break;
  case 3: //Multiplication
    printf("Enter the first number: ");
    scanf("%f", &fNum1);
    printf("Enter the second number: ");
    scanf("%f", &fNum2);
    fSolution = fNum1 * fNum2;
    printf("%.2f * %.2f = %.2f", fNum1, fNum2, fSolution);
    break;
  case 4: //Divison
    printf("Enter the first number: ");
    scanf("%f", &fNum1);
    printf("Enter the second number: ");
    scanf("%f", &fNum2);
    fSolution = fNum1 / fNum2;
    printf("%.2f / %.2f = %.2f", fNum1, fNum2, fSolution);
    break;
  case 5: //Modulus
    printf("Enter the first number: ");
    scanf("%d", &iNum1);
    printf("Enter the second number: ");
    scanf("%d", &iNum2);
    iSolution = iNum1 % iNum2;
    printf("%d (mod) %d = %d", iNum1, iNum2, iSolution);
    break;
  case 6: //Prime_Check
    printf("Enter number to be tested: ");
    scanf("%d", &iNum1);
    if (iNum1 != 2 && iNum1 != 3 && iNum1 != 5 && iNum1 != 7 && (iNum1 % 2 == 0 || iNum1 % 3 == 0 || iNum1 % 5 == 0 || iNum1 % 7 == 0))
      printf("\nNot Prime\n");
    else
      printf("\nPrime\n");
    break;
  case 7: //exit
    printf("Goodbye!");
    break;
  }


  printf("\n");
}