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函数判断素数.c

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+#include<stdio.h>
+#include<math.h>
+int judge(int m)
+{
+	int i,count=0;
+	if(m<2)
+	{
+		return 0;
+	}
+	for(i=2;i<=sqrt(m);i++)
+	{
+		if(m%i==0)
+		{
+			count++;
+		}
+	}
+	if(count==0)
+	{
+		return 1;
+	}
+	else
+	{
+		return 0;
+	}
+}
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	if(judge(n)==1)
+	{
+		printf("Yes");
+	}
+	else
+	{
+		printf("No");
+	}
+	return 0;
+}