From 39731c5060105b5c275484a9754ef415973f3604 Mon Sep 17 00:00:00 2001
From: giezz <giezz@vk.com>
Date: Sat, 18 Feb 2023 21:14:00 +0300
Subject: [PATCH] Console calculator implementation (initial commit)
---
.gitignore | 6 +++++
main.c | 67 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 73 insertions(+)
create mode 100644 .gitignore
create mode 100644 main.c
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cdfa015
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,6 @@
+.idea
+
+cmake-buid-debug
+
+# Executables
+*.exe
\ No newline at end of file
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..8052885
--- /dev/null
+++ b/main.c
@@ -0,0 +1,67 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+double calculate(char op, double num1, double num2) {
+ double result = 0;
+ switch (op) {
+ case '+':
+ result = num1 + num2;
+ break;
+ case '-':
+ result = num1 - num2;
+ break;
+ case '*':
+ result = num1 * num2;
+ break;
+ case '/':
+ result = num1 / num2;
+ break;
+ }
+ return result;
+}
+
+int main() {
+ double number = 0;
+ double tmpNumber = 0;
+ char input;
+ char operator;
+
+ while (1) {
+ scanf(" %c", &input);
+ switch (input) {
+ case '+':
+ operator = '+';
+ tmpNumber = number;
+ number = 0;
+ break;
+ case '-':
+ operator = '-';
+ tmpNumber = number;
+ number = 0;
+ break;
+ case '*':
+ operator = '*';
+ tmpNumber = number;
+ number = 0;
+ break;
+ case '/':
+ operator = '/';
+ tmpNumber = number;
+ number = 0;
+ break;
+ case '=':
+ printf("%lf\n", calculate(operator, tmpNumber, number));
+ tmpNumber = 0;
+ number = 0;
+ break;
+ case 'q':
+ goto exit;
+ // operator doesn't match any case constant
+ default:
+ number = (number * 10) + atof(&input);
+ printf("%.1lf\n", number);
+ }
+ }
+ exit:
+ return 0;
+}