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#include <iostream>
#include <string>
#include <cmath>
using namespace std;
void usage() {
// Prints usage message (help)
system("figlet XSC | lolcat");
cout << "\neXtremelySimpleCalculator usage:\n"
<< "`xsc --help | -h` for help\n"
<< "`xsc <number> <(+|-|x|/|%|^)> <number>` for mathematical operation\n"
<< "`xsc -sqrt | -r <number>` for square root operation\n"
<< "\n[n!] `xsc` doesn't support mathematical expressions (to-do)\n";
}
int main(int argc, char* argv[]) {
// AAAAAAAAAA (a.k.a. argument validation and execution)
for (int i = 1; i < argc; ++i) {
string arg = argv[i];
if (arg == "--sqrt" || arg == "-r") {
if (i + 1 < argc) {
double num = stod(argv[i + 1]);
cout << sqrt(num) << "\n";
return 0;
}
else {
cout << "[e!] invalid input!\n";
usage();
return 1;
}
}
else if (arg == "--help" || arg == "-h") {
usage();
return 0;
}
else if (i + 2 < argc) {
string op = argv[i + 1];
double num1 = stod(argv[i]);
double num2 = stod(argv[i + 2]);
double result;
if (op == "+") {
result = num1 + num2;
}
else if (op == "-") {
result = num1 - num2;
}
else if (op == "x") {
result = num1 * num2;
}
else if (op == "/") {
if (num2 != 0) {
result = num1 / num2;
}
else {
cout << "[math_e!] division by zero!\n";
usage();
return 1;
}
}
else if (op == "%") {
result = fmod(num1, num2);
}
else if (op == "^") {
result = pow(num1, num2);
}
else {
cout << "[e!] invalid operator!\n";
usage();
return 1;
}
// show result :)
cout << result << "\n";
return 0;
}
else {
cout << "[e!] invalid input!\n";
usage();
return 1;
}
}
return 0;
}
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