C Exercises: A menu-driven program for a simple calculator
26. Simple Calculation Menu
Write a program in C which is a Menu-Driven Program to perform a simple calculation.
Visual Presentation:
Sample Solution:
C Code:
#include <stdio.h> // Include the standard input/output header file.
void main() {
int num1,num2,opt; // Declare variables to store user input and operation choice.
// Prompt user for two integers and store them.
printf("Enter the first Integer :");
scanf("%d",&num1);
printf("Enter the second Integer :");
scanf("%d",&num2);
// Display the menu for operation choice.
printf("\nInput your option :\n");
printf("1-Addition.\n2-Substraction.\n3-Multiplication.\n4-Division.\n5-Exit.\n");
scanf("%d",&opt); // Read and store the user's choice.
switch(opt) { // Start a switch statement based on the user's choice.
case 1:
printf("The Addition of %d and %d is: %d\n",num1,num2,num1+num2); // Perform addition and print result.
break;
case 2:
printf("The Substraction of %d and %d is: %d\n",num1,num2,num1-num2); // Perform subtraction and print result.
break;
case 3:
printf("The Multiplication of %d and %d is: %d\n",num1,num2,num1*num2); // Perform multiplication and print result.
break;
case 4:
if(num2==0) {
printf("The second integer is zero. Divide by zero.\n"); // Handle division by zero.
} else {
printf("The Division of %d and %d is : %d\n",num1,num2,num1/num2); // Perform division and print result.
}
break;
case 5:
break; // Exit the program.
default:
printf("Input correct option\n"); // Display error message for invalid input.
break;
}
}
Output:
Enter the first Integer :10
Enter the second Integer :2
Input your option :
1-Addition.
2-Substraction.
3-Multiplication.
4-Division.
5-Exit.
3
The Multiplication of 10 and 2 is: 20
Flowchart:
For more Practice: Solve these Related Problems:
- Write a C program that provides a menu for addition, subtraction, multiplication, and division and loops until exit.
- Write a C program to implement a menu-driven calculator using switch-case and function pointers.
- Write a C program to perform simple calculations based on a menu selection and include error handling for division by zero.
- Write a C program to build a menu-driven program that accepts two numbers, performs all basic operations, and logs each operation to a file.
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