Add FZOI Codes

FZOI/任意进制转换.cpp

@@ -0,0 +1,58 @@
+#include <iostream>
+#include <string>
+
+using namespace std;
+
+int main() {
+    long long n;
+    cin >> n;
+    
+    if(n == 0)
+    {
+    	cout << 0 << endl << 0 << endl << 0 ;
+    }
+    
+    if(n == 1)
+    {
+    	cout << 1 << endl << 1 << endl << 1 ;
+    }
+
+    string binary = "";
+    long long temp = n;
+    while (temp > 0) {
+        binary = to_string(temp % 2) + binary;
+        temp /= 2;
+    }
+    if(n < 0)
+    {
+    	cout << 1 << binary << endl;
+    }
+    else
+    {
+    	cout << binary << endl;
+    }
+    
+
+    string octal = "";
+    temp = n;
+    while (temp > 0) {
+        octal = to_string(temp % 8) + octal;
+        temp /= 8;
+    }
+    cout << octal << endl;
+
+    string hex = "";
+    temp = n;
+    while (temp > 0) {
+        long long remainder = temp % 16;
+        if (remainder < 10) {
+            hex = to_string(remainder) + hex;
+        } else {
+            hex = static_cast<char>('A' + (remainder - 10)) + hex;
+        }
+        temp /= 16;
+    }
+    cout << hex << endl;
+
+    return 0;
+}