cstdio/stdio.h 的区别/ gets（s+1）的注意事项

#include<stdio.h>
//#include<cstdio>
using namespace std;
const int maxn=10010;
const int N=10;
//如果是.h  会进行四舍五入
//下面那个直接切断 
int main(){double db=3.25;printf("%.1f",db);return 0;
}

#include<cstdio>
#include<cstring>
#include<iostream>
#include<algorithm>
#include<cmath>using namespace std;
const int maxn=10010;
const int N=10;int main(){char s[maxn];scanf("%s",s+1);int n=strlen(s+1);printf("%d",n);return 0;
}