diff --git a/第一讲 变量、输入输出、表达式与顺序语句/613.cpp b/第一讲 变量、输入输出、表达式与顺序语句/613.cpp
new file mode 100644
index 0000000..bd18b22
--- /dev/null
+++ b/第一讲 变量、输入输出、表达式与顺序语句/613.cpp	
@@ -0,0 +1,13 @@
+#include <cstdio>
+
+int main()
+{
+    double A, B, C;
+    scanf("%lf%lf%lf", &A, &B, &C);
+    printf("TRIANGULO: %.3lf\n", A * C / 2);
+    printf("CIRCULO: %.3lf\n", 3.14159 * C * C);
+    printf("TRAPEZIO: %.3lf\n", (A + B) * C / 2);
+    printf("QUADRADO: %.3lf\n", B * B);
+    printf("RETANGULO: %.3lf\n", A * B);
+    return 0;
+}