void read_file(void)
{
int i;
// clrscr();
printf(" Discrete Event Simulation Illustration\n");
printf(" Single Queue Single Server Simulation \n");
printf(" ======================================\n");
printf("File Name: ");
scanf("%s", file_name);
if ((DFILE = fopen(file_name,"r")) == NULL)
{
printf("Error : Cannot open the input file!\n");
exit(0);
}
i=0;
do {
fscanf(DFILE, "%f %f", DSET1+i, DSET2+i);
i++;
} while(DSET2[i-1] > 0);
printf("Please Key in Ending time: ");
scanf("%f", &STOPT);
}
do循环部分是干什么,还有打开文件对文件位置是有要求吗还是说电脑里存在这个文件就可以,谢谢