时区间时间的转换

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//时区间时间的转换#include<stdio.h>#include<string.h>int difference(char *zone1,char *zone2){char zone[32][10]={"UTC","GMT","BST","IST","WET","WEST","CET","CEST","EET","EEST","MSK","MSD","AST","ADT","NST","NDT","EST","EDT","CST","CDT","MST","MDT","PST","PDT","HST","AKST","AKDT","AEST","AEDT","ACST","ACDT","AWST"};float time[32]={0,0,1,1,0,1,1,2,2,3,3,4,-4,-3,-3.5,-2.5,-5,-4,-6,-5,-7,-6,-8,-7,-10,-9,-8,10,11,9.5,10.5,8};int i,j;for(i=0;strcmp(zone[i],zone1);i++);for(j=0;strcmp(zone[j],zone2);j++);return (int)((time[i]-time[j])*60);}int main(){int nCases,i;scanf("%d",&nCases);for(i=0;i<nCases;i++){int hours,minute;char time[9];scanf("%s",time);switch(time[0]){case 'n':hours=12; minute=0; break;case 'm':hours=0; minute=0; break;default:sscanf(time,"%d:%d",&hours,&minute);hours=hours%12;scanf("%s",time);if(time[0]=='p') hours+=12;}char timezone1[5],timezone2[5];scanf("%s%s",timezone1,timezone2);int newTime;newTime=hours*60+minute+difference(timezone2,timezone1);if(newTime<0) newTime+=1440;newTime%=1440;switch(newTime){case 0:printf("midnight\n");break;case 720:printf("noon\n");break;default:hours=newTime/60;minute=newTime%60;if(hours==0)printf("12:%02d a.m.\n",minute);else if(hours<12)printf("%d:%02d a.m.\n",hours,minute);else if(hours==12)printf("12:%02d p.m.\n",minute);elseprintf("%d:%02d p.m.\n",hours%12,minute);}}return 0;}
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