链表的应用：计算每个作业的运行时间

//链表的应用：计算每个作业的运行时间
#include<stdio.h>
#include<string.h>
struct Task{
char name[50];
char sDate[15];
char sTime[15];
char eDate[15];
char eTime[15];
int cost;
Task *next;
};
struct Resource{
char ID[50];
Task *fstTask;
Task *lstTask;
Resource *next;
};
int daysInMon[12]={31,28,31,30,31,30,31,31,30,31,30,31};
void computeTimeCost(Task *task){
int sYear,sMon,sDay,sHour,sMin,sSec;
int eYear,eMon,eDay,eHour,eMin,eSec;
int sDays=0,sSeconds;
int eDays=0,eSeconds;
int i;
sscanf(task->sDate,"%d-%d-%d",&sYear,&sMon,&sDay);
sscanf(task->sTime,"%d:%d:%d",&sHour,&sMin,&sSec);
for(i=1;i<sMon;i++)
sDays=sDays+daysInMon[i-1];
sDays=sDay-1;
sSeconds=((sDays*24+sHour)*60+sMin)*60+sSec;

sscanf(task->eDate,"%d-%d-%d",&eYear,&eMon,&eDay);
sscanf(task->eTime,"%d:%d:%d",&eHour,&eMin,&eSec);
for(i=1;i<eMon;i++)
eDays=eDays+daysInMon[i-1];
eDays=eDays-1;
eSeconds=((eDays*24+eHour)*60+eMin)*60+eSec;

task->cost=(eYear-sYear)*365*24*3600-sSeconds+eSeconds;
}
Resource *processLog(char log[],Resource *resList){
char date[30],time[30],taskName[30];
Resource *curRes,*temp;
Task *curTask;
if(strstr(log,"created")){
curRes=new Resource;
curRes->fstTask=curRes->lstTask=NULL;
sscanf(strstr(log,"created")+9,"%s",curRes->ID);
curRes->next=NULL;
if(resList==NULL)
return curRes;
temp=resList;
while(temp->next!=NULL)
temp=temp->next;
temp->next=curRes;
return resList;
}
sscanf(log,"%s%s%s",date,time,taskName);
curRes=resList;
while(strstr(log,curRes->ID)==NULL) curRes=curRes->next;
if(strstr(log,"started")){
curTask=new Task;
strcpy(curTask->name,taskName);
strcpy(curTask->sDate,date);
strcpy(curTask->sTime,time);
curTask->next=NULL;
if(curRes->fstTask==NULL)
curRes->fstTask=curTask;
else
curRes->lstTask->next=curTask;
curRes->lstTask=curTask;
}
if(strstr(log,"finished")){
curTask=curRes->fstTask;
while(strcmp(curTask->name,taskName)!=0)
curTask=curTask->next;
strcpy(curTask->eDate,date);
strcpy(curTask->eTime,time);
computeTimeCost(curTask);
}
return resList;
}
int main()
{
FILE *fin,*fout;
char log[80],logFile[30],resultFile[30];
Resource *resList,*curRes;
Task *task;

printf("input log file's name:\n");
scanf("%s",logFile);
printf("input the file name for saving results\n");
scanf("%s",resultFile);

resList=NULL;
fin=fopen(logFile,"r");
fgets(log,80,fin);
while(strlen(log)>1){
resList=processLog(log,resList);
fgets(log,80,fin);
if(feof(fin)) break;
}
fclose(fin);
fout=fopen(resultFile,"w");
while(resList!=NULL){
curRes=resList;
resList=curRes->next;
sprintf(log,"Tasks performed on resource %s \n",curRes->ID);
fputs(log,fout);
while(curRes->fstTask!=NULL){
task=curRes->fstTask;
curRes->fstTask=task->next;
sprintf(log,"%s%10s%8d(s)%15s\n",task->sDate,task->sTime,task->cost,task->name);
fputs(log,fout);
delete task;
}
fputs("\n",fout);
delete curRes;
}
fclose(fout);
return 0;
}