更新了许多

判断数正负.cpp

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+#include <iostream>
+#include <iomanip>
+#include <cstring>
+#include <cstdio>
+#include <ctime>
+using namespace std;
+int main(){
+	int a;
+	cin >>a;
+	if(a>0){
+		cout <<"positive";
+	} 
+	if(a==0){
+		cout <<"zero";
+	}
+	if(a<0){
+		cout <<"negative";
+	}
+	return 0;
+}