Initial commit: C language learning code

翁凯C语言/2/最大公约数(辗转相除法).c

@@ -0,0 +1,40 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+
+int gcd(int a,int b)
+{
+	int c;
+	while(c>0)
+	{
+		c = a % b;
+		a = b;
+		b = c;
+	}
+	return a;
+}
+
+int lcm(int a, int b)
+{
+	return (a / gcd(a, b)) * b;
+}
+
+int main()
+{
+	int a;
+	int b;
+    printf("请输入两个整数：");
+    scanf("%d %d", &a, &b);
+
+	if (a<0 || b<0)
+	{
+		printf("输入错误，请重新输入！\n");
+		return -1;
+	}
+	else
+	{
+		printf("%d和%d的最大公约数是：%d\n", a, b, gcd(a, b));
+	}
+	return 0;
+}