Do Huu Hoang Tung 22026551

simplecal.cpp

@@ -0,0 +1,95 @@
+#include <iostream>
+#include <iomanip>
+#include <cmath>
+#include <cstdlib>
+
+ using namespace std;
+
+ float arithmetic(float num1, float num2, char op) {
+     switch(op)
+     {
+     case '+':
+         {
+    return num1+num2;
+    break;
+         }
+    case '-':
+         {
+    return num1-num2;
+    break;
+         }
+         case '*':
+         {
+    return num1*num2;
+    break;
+         }
+         case '/':
+         {
+    if (num2==0)
+    cout <<"Invalid divisor";
+    return num1/num2;
+    break;
+         }
+    case '%':
+         {
+    if (num2==0)
+    break;
+    cout <<"Invalid divisor";
+    return num1%num2;
+    break;
+         }
+    default:
+ cout << "Invalid operator" << endl;
+ exit(1);
+     }
+ }
+ float arithmetic2(string func, float num) {
+    if (func == "sin") {
+        return sin(num);
+    } else if (func == "cos") {
+        return cos(num);
+    } else if (func == "sqrt") {
+        return sqrt(num);
+    } else {
+        cout << "Invalid function" << endl;
+        exit(1);
+    }
+}
+
+ int main(float argc, char* argv[])
+{
+
+  if (argc == 4) {
+        float num1, num2, result;
+        char op;
+
+        num1 = atof(argv[1]);
+        op = argv[2][0];
+        num2 = atof(argv[3]);
+
+        cout << arithmetic(num1, num2, op) << endl;
+    } else if (argc == 3) {
+        float num, result;
+        string func;
+        num = atof(argv[2]);
+        func = argv[1];
+
+        cout << arithmetic2(func, num) << endl;
+    }
+
+
+    return 0;
+}
+
+float arithmetic2(string func, float num) {
+    if (func == "sin") {
+        return sin(num);
+    } else if (func == "cos") {
+        return cos(num);
+    } else if (func == "sqrt") {
+        return sqrt(num);
+    } else {
+        cout << "Invalid function" << endl;
+        exit(1);
+    }
+}