main, compile with gcc or g++

1 files changed, 102 insertions, 0 deletions

diff --git a/xsc.cpp b/xsc.cpp
new file mode 100644
index 0000000..d2ba8c2
--- /dev/null
+++ b/xsc.cpp
@@ -0,0 +1,102 @@
+#include <iostream>
+#include <cstdlib>
+#include <cmath>
+using namespace std;
+
+void clear() {
+    system("clear");
+}
+void usage() {
+    clear();
+    system("figlet XSC | lolcat");
+    cout << "\neXtremelySimpleCalculator usage:\n"
+    << "`xsc --help` for help\n"
+    << "`xsc <number> <(+|-|*|/|%|^)> <number>` for basic operation calculating\n"
+    << "`xsc -r|--sqrt <number>` for square root calculation\n";
+}
+
+int doOper(int n1, char opx[], int n2) {
+    int result;
+    switch (opx[1]) {
+       case '+':
+          result = n1 + n2;
+          break;
+       case '-':
+          result = n1 - n2;
+          break;
+       case '*':
+          result = n1 * n2;
+          break;
+       case '/':
+          result = n1 / n2;
+          break;
+       case '%':
+          result = n1 % n2;
+          break;
+       case '^':
+          result = pow(n1, n2);
+          break;
+        case 'sqrt':
+          result = sqrt(n1);
+       default:
+          cout << "invalid operator!\n";
+          break;
+    }
+    return result;
+}
+
+int main(int argc, char* argv[]) {
+    if (argc > 1) {
+        if (argv[1] == "--help" || argv[1] == "-h") {
+            usage();
+            return 1;
+        }
+        else if (argv[1] == "-r" || argv[1] == "--sqrt") {
+            if (argc > 2) {
+                int n1 = stoi(argv[2]);
+                int result =doOper(n1, argv[1], 0);
+                cout << n1 << " "  << argv[1] << " = " << result << "\n";
+                return 0;
+            }
+            else if (argc < 3) {
+                cout << "too many arguments!\n";
+                usage();
+                return 1;
+            }
+            else if (argc < 2) {
+                cout << "too few arguments!\n";
+                usage();
+                return 1;
+            }
+            else {
+                cout << "invalid argument!\n";
+                usage();
+                return 1;
+            }
+        }
+        else {
+            if (argc < 3) {
+                int n1 = stoi(argv[1]);
+                int n2 = stoi(argv[3]);
+                int result = doOper(n1, argv[2], n2);
+                cout << n1 << " "  << argv[1] << " " << n2 << " = " << result << "\n";
+                return 0;
+            }
+            else if (argc > 3) {
+                cout << "too many arguments!\n";
+                usage();
+                return 1;
+            }
+            else if (argc < 3) {
+                cout << "too few arguments!\ndid you want to calculate a square root? use --sqrt\n";
+                usage();
+                return 1;
+            }
+            else {
+                cout << "invalid argument; << " << argv[1] << " >> \n";
+                usage();
+                return 1;
+            }
+        }
+    }
+}