Initial commit: C language learning code

翁凯C语言/2/最大公约数2.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <math.h>
+
+int gcd(int a,int b)	//最大公约数
+{
+	int gcd = a;
+	if (a>b)
+	{
+		gcd = b;
+	}
+	for (;gcd>=1;gcd--)
+	{
+		if (a%gcd==0 && b%gcd==0)
+		{
+			return gcd;
+			break;
+		}
+	}
+}
+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;
+}