#include
#include
#include
#define num 4
#define col 3
using namespace std;
int data[num][col] = {{1,0,120},
{2,50,50},
{3,60,10},
{4,110,20}
};
void sort_fcfs(){
for(int i=0; i
if(data[i][1] > data[j][1])
swap(data[i],data[j]);
}
}
double sum_array(double a[]){
int i = 0;
double sumf = 0;
while(i
sumf = sumf + a[i];
i++;
}
return sumf/num ;
}
void Fcfs(){
sort_fcfs();
int finishtime[num];
double runovertime[num];//周转时间
double dqzztime[num];//带权周转时间
for(int i=0; i
if(i == 0){
finishtime[i] = data[i][1] + data[i][2];
}
else{
finishtime[i] = finishtime[i-1] + data[i][2];
}
}
for(int i=0; i
runovertime[i] = finishtime[i] - data[i][1];
dqzztime[i] = runovertime[i] / data[i][2];
}
printf("FCFS调度算法结果是:n");
printf("作业名t完成时间t周转时间t带权周转时间n");
for(int i=0; i
printf("%dt%dt %.1lft %.1lfn",data[i][0],finishtime[i],runovertime[i],dqzztime[i]);
}
printf("平均周转时间:%.1lfn",sum_array(runovertime));
printf("平均带权周转时间:%.3lfn",sum_array(dqzztime));
}
int main(){
printf("-------------------------------n");
printf("作业名 到达时间 服务时间n");
for(int i=0; i
for(int j=0; j
printf("%d ",data[i][j]);
}
printf("n");
}
printf("-------------------------------n");
Fcfs();
return 0;
}



