From 7d4e79bf2589acc8bf4f6f5a60f2e0c0eaf31597 Mon Sep 17 00:00:00 2001
From: nihonium <nihonium@rape.lol>
Date: Sun, 20 Feb 2022 16:32:02 +0300
Subject: [PATCH] rational.c

---
 numbers/rational.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 numbers/rational.c

diff --git a/numbers/rational.c b/numbers/rational.c
new file mode 100644
index 0000000..75b4a05
--- /dev/null
+++ b/numbers/rational.c
@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+int main() {
+	char s[31] = "";
+	int i;
+	double res = 0;
+	char irnull = 0;
+	char r[31], ir[31];
+	scanf("%s", s);
+	
+	for (i = 0; i < 31; ++i) {
+		if (s[i] == '.') {
+			s[i] = '\0';
+			break;
+		}
+	}
+	
+	++i;
+
+	strcpy(r, s);
+
+	if (i < 32) {
+		strcpy(ir, s+i);
+	}
+	else {
+		irnull = 1;
+	}
+	
+	// Перевод целой части	
+	int len = strlen(r); 
+	for (i = 0; i < len; ++i) {
+		res += (r[i] - '0') * pow(2, len-i-1);
+	}
+	
+	// Если дробная часть есть, то переводим и её
+	if (!irnull) {
+		len = strlen(ir); 
+		for (i = 1; i < len+1; ++i) {
+			res += (ir[i-1] - '0') * pow(2, -i);
+		}
+	}
+
+	printf ("%.12lf", res);
+	return 0;
+}