刷题的时候,题目会给出变量的范围,这个时候就要想清楚用哪个类型
#include<iostream> using namespace std; int main(){ int d2 = (1<<31)-1; int d0 = 10; long l2 = ((long)1<<31)-1; long l0 = 10; long long ll2 = ((long long)1<<63)-1; long long ll0 = 10; for(int i = 0; i<8; i++) d0*=10;//即10^9 for(int i = 0; i<8; i++) l0*=10;//即10^9 for(int i = 0; i<17; i++) ll0*=10;//即10^18 cout<< d2 << " (int的最大值)" <<endl; cout<< d0 << " (对应10^9)" <<endl; cout<< l2 << " (long的最大值)" <<endl; cout<< l0 << " (对应10^9)" <<endl; cout<< ll2 << " (long long的最大值)" <<endl; cout<< ll0 << " (对应10^18)" <<endl; return 0; }
输出结果为:
编辑
标签:10,int,long,数量级,d2,对应 From: https://www.cnblogs.com/--OvO--/p/16838893.html