Initial commit: C language learning code

翁凯C语言/2/素数判断.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main()
+{
+	int n;
+	printf("输入数字：");
+	scanf("%d", &n);
+
+	int a;
+	int b=1;
+
+	for(a=2;a<n;a++)
+	{
+		if(n%a==0)
+		{
+			b=0;
+			break;
+		}
+	}
+	if(b==1)
+	{
+		printf("%d是素数", n);
+	}
+	else if (b==0)
+	{
+		printf("%d不是素数", n);
+	}
+
+	return 0;
+}