C Program to Enter Two Numbers and Perform All Arithmetic Operations

All arithmetic operations of two integer numbers in the C programming language.

In this article, you will learn how to perform all arithmetic operations of two integer numbers in the C programming language.

 

Example

 

You should have knowledge of the following topics in c programming to understand this program.

• C Arithmetic operators
• C Functions
• C if-else statement
• C switch case statement
• C main() function
• C printf() function

 

There we will perform these arithmetic operations like Addition, Subtraction, Multiplication, Division, and Modulus.

 

In this article, we solved this problem in five methods:

1. Using the normal calculation
2. Using the if...else...if ladder
3. Using the switch case
4. Using the functions
5. Using the pointers

C Program to Perform Arithmetic Operations on Two Numbers

// C Program to Perform Arithmetic Operations on Two Numbers
#include <stdio.h>

int main() {
    int p, q;
    int sum, sub, mul, mod;
    float div;

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    // It will perform all arithmetic operations
    sum = p + q;
    sub = p - q;
    mul = p * q;
    div = (float)p / q;
    mod = p % q;

    // It will print the final output of the program
    printf("\n");
    printf("Addition of       %d + %d = %d\n", p, q, sum);
    printf("Subtraction of    %d - %d = %d\n", p, q, sub);
    printf("Multiplication of %d * %d = %d\n", p, q, mul);
    printf("Division of       %d / %d = %f\n", p, q, div);
    printf("Modulus of        %d %% %d = %d\n", p, q, mod);
    return 0;
}

Run

Output

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C Program to Perform Arithmetic Operations using If else Statement

// C Program to Perform Arithmetic Operations using If else Statement
#include <stdio.h>

int main() {
    int p, q, choice;

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    // It will suggest to choose an option to make the operation
    printf("\nInput your choice to make an operation\n");
    printf("\n1 :: for Addition");
    printf("\n2 :: for Substraction");
    printf("\n3 :: for Multiplication");
    printf("\n4 :: for Division");
    printf("\n5 :: for Modulus");

    printf("\n\nEnter your choice: ");
    scanf("%d", &choice);

    // It will perform operation
    // According to user's choice & print the final output
    printf("\n");
    if (choice == 1) {
        printf("Addition of %d + %d = %d\n", p, q, p + q);
    } else if (choice == 2) {
        printf("Substraction of %d - %d = %d\n", p, q, p - q);
    } else if (choice == 3) {
        printf("Multiplication of %d * %d = %d\n", p, q, p * q);
    } else if (choice == 4) {
        printf("Division of %d / %d = %f\n", p, q, (float)p / q);
    } else if (choice == 5) {
        printf("Modulus of %d %% %d = %d\n", p, q, p % q);
    } else {
        printf("\nKindly input correct choice!\n");
    }
    return 0;
}

Run

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C Program to Perform Arithmetic Operations using Switch statement

// C Program to Perform Arithmetic Operations using Switch statement
#include <stdio.h>

int main() {
    int p, q, choice;

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    // It will suggest to choose an option to make the operation
    printf("\nInput your choice to make an operation\n");
    printf("\n1 :: for Addition");
    printf("\n2 :: for Substraction");
    printf("\n3 :: for Multiplication");
    printf("\n4 :: for Division");
    printf("\n5 :: for Modulus");

    printf("\n\nEnter your choice: ");
    scanf("%d", &choice);

    // It will perform operation
    // According to user's choice & print the final output
    printf("\n");
    switch (choice) {
        case 1:
            printf("Addition of %d + %d = %d\n", p, q, p + q);
            break;

        case 2:
            printf("Substraction of %d - %d = %d\n", p, q, p - q);
            break;

        case 3:
            printf("Multiplication of %d * %d = %d\n", p, q, p * q);
            break;

        case 4:
            printf("Division of %d / %d = %f\n", p, q, (float)p / q);
            break;

        case 5:
            printf("Modulus of %d %% %d = %d\n", p, q, p % q);
            break;

        default:
            printf("\nKindly input correct choice!\n");
            break;
    }
    return 0;
}

Run

Output

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C Program to Perform Arithmetic Operations using Functions

// C Program to Perform Arithmetic Operations using Functions
#include <stdio.h>

// @Function to make Addition
int Addition(int p, int q) {
    return p + q;
}

// @Function to make Subtraction
int Subtraction(int p, int q) {
    return p - q;
}

// @Function to make Multiplication
int Multiplication(int p, int q) {
    return p * q;
}

// @Function to make Division
float Division(int p, int q) {
    return (float)p / q;
}

// @Function to make Modulus
int Modulus(int p, int q) {
    return p % q;
}

int main() {
    int p, q;

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    // It will call the all user-defined function
    // Then, print the final output of the program
    printf("\n");
    printf("Addition of       %d + %d = %d\n", p, q, Addition(p, q));
    printf("Subtraction of    %d - %d = %d\n", p, q, Subtraction(p, q));
    printf("Multiplication of %d * %d = %d\n", p, q, Multiplication(p, q));
    printf("Division of       %d / %d = %f\n", p, q, Division(p, q));
    printf("Modulus of        %d %% %d = %d\n", p, q, Modulus(p, q));
    return 0;
}

Run

 

Explanation

In this given program, we have taken input 5 and 7 from the user then we applied arithmetic operations on these integer numbers.

Then this will be returned the output values of this program.

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C Program to Perform Arithmetic Operations using Pointers

// C Program to Perform Arithmetic Operations using Pointers
#include <stdio.h>

int main() {
    int p, q;
    int *ptr1, *ptr2;
    int sum, sub, mul, mod;
    float div;

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    // To store the address of `p` & `q`
    ptr1 = &p;
    ptr2 = &q;

    // It will perform all arithmetic operations
    sum = *ptr1 + *ptr2;
    sub = *ptr1 - *ptr2;
    mul = *ptr1 * *ptr2;
    div = (float)*ptr1 / *ptr2;
    mod = *ptr1 % *ptr2;

    // It will print the final output of the program
    printf("\n");
    printf("Addition of       %d + %d = %d\n", *ptr1, *ptr2, sum);
    printf("Subtraction of    %d - %d = %d\n", *ptr1, *ptr2, sub);
    printf("Multiplication of %d * %d = %d\n", *ptr1, *ptr2, mul);
    printf("Division of       %d / %d = %f\n", *ptr1, *ptr2, div);
    printf("Modulus of        %d %% %d = %d\n", *ptr1, *ptr2, mod);
    return 0;
}

Run

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C Program to Perform all Arithmetic Operations using Pointers

// C Program to Perform all Arithmetic Operations using Pointers
#include <stdio.h>

int main() {
    int p, q;
    int sum, sub, mul, mod;
    float div;

    int *x, *y; // These are the pointer variables

    // It will take two integer numbers
    printf("Enter any two positive integer numbers:\n");
    scanf("%d%d", &p, &q);

    x = &p;
    y = &q;

    // It will perform all arithmetic operations
    sum = *x + *y;
    sub = *x - *y;
    mul = *x * *y;
    div = (float)*x / *y;
    mod = *x % *y;

    // It will print the final output of the program
    printf("\n");
    printf("Addition of       %d + %d = %d\n", *x, *y, sum);
    printf("Subtraction of    %d - %d = %d\n", *x, *y, sub);
    printf("Multiplication of %d * %d = %d\n", *x, *y, mul);
    printf("Division of       %d / %d = %f\n", *x, *y, div);
    printf("Modulus of        %d %% %d = %d\n", *x, *y, mod);
    return 0;
}

Run

Output

 

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C Program to Perform Arithmetic Operations using Command Line Arguments

// C Program to Perform Arithmetic Operations using Command Line Arguments
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char* argv[]) {
    int p, q, result;
    int sum, sub, mul, mod;
    float div;
    
    if (argc < 4) {
        printf("Command-line arguments are missing!\n");
        printf("Put inputs as Value1 Value2\n");
        return -1;
    }
    
    // It will get the values from the command-line arguments
    p = atoi(argv[1]);
    q = atoi(argv[2]);
    
    // It will perform all arithmetic operations
    sum = p + q;
    sub = p - q;
    mul = p * q;
    div = (float)p / q;
    mod = p % q;
    
    // It will print the final output of the program
    printf("\n");
    printf("Addition of       %d + %d = %d\n", p, q, sum);
    printf("Subtraction of    %d - %d = %d\n", p, q, sub);
    printf("Multiplication of %d * %d = %d\n", p, q, mul);
    printf("Division of       %d / %d = %f\n", p, q, div);
    printf("Modulus of        %d %% %d = %d\n", p, q, mod);
    return 0;
}

Output

 

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