圆的面积

2023-03-23 23:09:30 +08:00 · 2023-03-23 23:09:30 +08:00 · 9cac8f9c5d
parent 88fc8776b5
commit 9cac8f9c5d
1 changed files with 11 additions and 0 deletions
--- a/第一讲变量、输入输出、表达式与顺序语句/604.cpp
+++ b/第一讲变量、输入输出、表达式与顺序语句/604.cpp
@ -0,0 +1,11 @@
+#include <cstdio>
+
+using namespace std;
+
+int main()
+{
+    double pi = 3.14159, r;
+    scanf("%lf", &r);
+    printf("A=%.4f", pi * r * r);
+    return 0;
+}