题意：
以"UTC+X'', "UTC-X'', "UTC+X.Y'', or "UTC-X.Y'' 四种格式给定当地时间，要求转换为北京时间
思路：Gold_7写的
我自己转C后字符串处理的模拟题并不熟练啊
1 #include <cstdio> 2 #include <cstring> 3 #include <string> 4 #include <cmath> 5 #include <iostream> 6 #include <algorithm> 7 #include <map> 8 #include <set> 9 #include <queue> 10 #include <vector> 11 using namespace std; 12 typedef long long ll; 13 typedef unsigned int uint; 14 typedef unsigned long long ull; 15 typedef pair<int, int> PII; 16 typedef vector<int> VI; 17 #define fi first 18 #define se second 19 #define MP make_pair 20 21 int read() 22 { 23 int v = 0, f = 1; 24 char c = getchar(); 25 while (c < 48 || 57 < c) {if (c == '-') f = -1; c = getchar();} 26 while (48 <= c && c <= 57) v = (v << 3) + v + v + c - 48, c = getchar(); 27 return v * f; 28 } 29 30 char ch[1000]; 31 32 int main() 33 { 34 int cas = read(); 35 while (cas--) 36 { 37 int x = read(), y = read(); 38 scanf("%s", ch); 39 int flag=1; 40 int p = 0, q = 0; 41 if (ch[3]=='-')flag=-1; 42 p = p * 10 + ch[4] - '0'; 43 if (ch[5]) 44 { 45 if (ch[5] != '.') 46 { 47 p = p * 10 + ch[5] - '0'; 48 if (ch[6] == '.') 49 q = ch[7] - '0'; 50 } else 51 { 52 q = ch[6] -'0'; 53 } 54 } 55 p*=flag;q*=flag; 56 p -= 8; 57 x += p; 58 y += q * 6; 59 x += y / 60; 60 y %= 60; 61 if (y<0){x--;y+=60;} 62 x = (x % 24 + 24) % 24; 63 printf("%02d:%02d ", x, y); 64 for (int i = 0; ch[i]; i++) 65 ch[i] = 0; 66 } 67 }