Example: 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;
}