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Author: cusnaruto

lec1-simplecalculator/UpdateSimpleCalc_22026555.cpp

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+#include <bits/stdc++.h>
+using namespace std;
+
+int arithmetic(int num1, int num2, char op);
+double sothuc(char op, double num);
+int main(int argc, char* argv[])
+{
+    if (argc == 4)
+    {
+	int num1, num2;	char op;
+	num1 = atoi(argv[1]);	
+    op = argv[2][0];
+    num2 = atoi(argv[3]);
+	cout << arithmetic(num1, num2, op) << endl;
+	return 0;
+	}
+	else if (argc == 3)
+	{
+		double num;
+		char op;
+		num = atoi(argv[2]);
+		op = argv[1][0];
+		cout << sothuc(op, num) << endl;
+		return 0;
+	}
+	else {
+			cout << "Invalid" << endl;
+			return 0;
+		}
+}
+
+int arithmetic(int num1, int num2, char op)
+{
+    switch (op)
+    {
+    case '+':
+        return num1 + num2;
+    case '-':
+        return num1 - num2;
+    case 'x':
+        return num1 * num2;
+    case '/':
+        if (num2 == 0)
+        {
+            cout << "Invalid divisor" << endl;
+            exit(1);
+        }
+        else
+            return num1 / num2;
+    case '%':
+        if (num2 == 0)
+        {
+            cout << "Invalid divisor" << endl;
+            exit(1);
+        }
+        else
+            return num1 % num2;
+    default:
+        cout << "Invalid operator" << endl;
+        exit(1);
+    }
+}
+double sothuc(char op, double num)
+{
+	switch (op)
+	{
+		case 'c':
+			return cos(num);
+		case 's':
+			if (num < 0)
+			{
+				cout << "Invalid number" << endl;
+				exit(1);
+			}
+			else
+				return sqrt(num);
+		default:
+			cout << "Invalid operator" << endl;
+        	exit(1);
+	}
+}