Created
May 25, 2015 19:23
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Simple calculator made in C
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//Calculator program | |
#include <stdio.h> | |
#include <stdlib.h> | |
int main() | |
{ | |
int menu; //Variable for the number the user inputs | |
float num1, num2, result; //Float variables for the user input and output, used floats in case the user enters e.g. 14.7 | |
printf("Enter a number from the list below\n\n"); | |
printf("1. Addition\n"); //Calculator menu, user must enter a value from 1 - 4 for the program to work | |
printf("2. Subtraction\n"); | |
printf("3. Multiplication\n"); | |
printf("4. Division\n\n"); | |
printf("Enter number: "); //User input for the calculator menu | |
scanf("%d", &menu); | |
printf("\n"); | |
switch(menu) //switch statement for menu | |
{ | |
case 1: | |
printf("You entered Addition\n\n"); | |
printf("Enter first number: "); //User input for first number | |
scanf("%f", &num1); | |
printf("Enter second number: "); //User input for second number | |
scanf("%f", &num2); | |
printf("\n"); | |
result = num1 + num2; //Addition calculation | |
printf("%.2f + %.2f = %.2f\n", num1, num2, result); //Addition output | |
break; | |
case 2: | |
printf("You entered Subtraction\n\n"); | |
printf("Enter first number: "); //User input for first number | |
scanf("%f", &num1); | |
printf("Enter second number: "); //User input for second number | |
scanf("%f", &num2); | |
printf("\n"); | |
result = num1 - num2; //Subtraction calculation | |
printf("%.2f - %.2f = %.2f\n", num1, num2, result); //Subtraction output | |
break; | |
case 3: | |
printf("You entered Multiplication\n\n"); | |
printf("Enter first number: "); //User input for first number | |
scanf("%f", &num1); | |
printf("Enter second number: "); //User input for second number | |
scanf("%f", &num2); | |
printf("\n"); | |
result = num1 * num2; //Multiplication calculation | |
printf("%.2f * %.2f = %.2f\n", num1, num2, result); //Multiplication Output | |
break; | |
case 4: | |
printf("You entered Division\n\n"); | |
printf("Enter first number: "); //User input for first number | |
scanf("%f", &num1); | |
printf("Enter second number: "); //User input for first number | |
scanf("%f", &num2); | |
printf("\n"); | |
result = num1 / num2; //Division calculation | |
printf("%.2f / %.2f = %.2f\n", num1, num2, result); | |
break; | |
default: | |
printf("Enter correct number e.g 1 - 4\n"); //Outputted if the user enters a value other than 1 - 4 | |
break; | |
} | |
return 0; | |
} | |
//End of code |
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