calculator demo in c

rahab/0-calculator.c

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+#include "main.h"
+
+/* Function to check if the operator is valid*/
+int isValidOperator(char operator) 
+{
+	return operator == '+' || operator == '-' || operator == '*' || operator == '/';
+}
+
+/*Function to add two numbers */
+float addition(float num1, float num2) {
+	return num1 + num2;
+}
+
+/*Function to subtract two numbers*/
+float subtraction(float num1, float num2) {
+	return num1 - num2;
+}
+
+/*Function to multiply two numbers */
+float multiplication(float num1, float num2) {
+	return num1 * num2;
+}
+
+/*Function to divide two numbers */
+float division(float num1, float num2) {
+	if (num2 == 0) {
+		printf("Error: Cannot divide by zero!\n");
+		return 0;
+	}
+	return num1 / num2;
+}

rahab/README.md

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+# collaborating on Calculator Demo project in c programming
+The Demo will run like a calculator which will handle 4 operation
+	.Addition
+	.Substraction
+	.Multiplication
+	.Division
+
+#Program contain 4 functions
+	.Addition function
+	.Multiplication function
+	.Substraction function
+	.Division function
+
+#Calculator is interactive
+	.It takes in two numbers from the user
+	.It takes in an arithmetic operator for the four math operation
+	.Perform arthmetic operationbased on user choice
+	.Then it's prints result when user entered valid operator
+	.When user enter wrong arthmetic operation other than division, addition,multiplication and addition
+	.program warn user then print an error message.
+
+#The program allow user to use calculator many time
+.After performing one operation user will be asked if he/she want to contiue
+	.if user select y(for yes) or Y(for capital Yes)user can keep using the calculator
+	.if user select other character or typed anything rather than Y or y the program will end.

rahab/main.c

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+#include <stdio.h>
+#include "main.h"
+
+int main() 
+{
+    char operator;
+    float num1, num2, result;
+    char choice;
+
+    printf("Welcome to the Four Basic Operations Calculator!\n");
+
+    do 
+    {
+        printf("Enter the first number: ");
+        scanf("%f", &num1);
+
+        printf("Enter an arithmetic operator (+, -, *, /): ");
+        scanf(" %c", &operator);
+
+        printf("Enter the second number: ");
+        scanf("%f", &num2);
+
+        if (isValidOperator(operator)) 
+	{
+            switch (operator) 
+	    {
+                case '+':
+                    result = addition(num1, num2);
+                    break;
+                case '-':
+                    result = subtraction(num1, num2);
+                    break;
+                case '*':
+                    result = multiplication(num1, num2);
+                    break;
+                case '/':
+                    result = division(num1, num2);
+                    break;
+            }
+
+            printf("Result: %.2f\n", result);
+        } 
+	else 
+	{
+            printf("Error: Invalid arithmetic operator!\n");
+        }
+
+        printf("Do you wish to perform another operation? (y/n): ");
+        scanf(" %c", &choice);
+    } 
+    while (choice == 'y' || choice == 'Y');
+
+    printf("Thank you for using the calculator. Goodbye!\n");
+
+    return 0;
+}

rahab/main.h

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+#ifndef MAIN_H
+#define MAIN_H
+
+#include <stdio.h>
+
+// Function prototypes
+float addition(float num1, float num2);
+float subtraction(float num1, float num2);
+float multiplication(float num1, float num2);
+float division(float num1, float num2);
+int isValidOperator(char operator);
+#endif // MAIN_H