實驗2

第1題、 #include<stdio.h> int main() {

int yyyy,mm,dd;//
printf("Enter a date(mm/dd/yyyy)");
scanf("%d/%d/%d",&mm,&dd,&yyyy);
printf("You Enter the date %d%d%.2d",yyyy,mm,dd);
return 0;

} 第2題、 #include<stdio.h> int main () {

int number ,mm,dd,yy;
float price;

printf("Enter item number:");
scanf("%d",&number);
printf("Enter nuit price:");
scanf("%f",&price);
printf("Enter purchase date (mm/dd/yy)");
scanf("%d%d%d",&mm,&dd,&yy);
printf("Item\tunit Price\Purchase Date\n");
printf("%d\t$%4.2f\t\t%-.2d/%.2d/%d\n",number,price,mm,dd,yy);
return 0;

}

第3題 #include<stdio.h> int main () {

int gsi,group,publisher,item,check;
printf("Enter ISBN:");
scanf("%d-%d-%d-%d-%d",&gsi,&group,&publisher,&item,&check);
printf("GSI Perdix:%d\n",gsi);
printf("Group identifier:%d\n",publisher);
printf("publisher code:%d\n",publisher);
printf("Item number:%d\n",item);
printf("Check code:%d\n",check);
return 0;
}

第4題 #include<stdio.h> int main() {

int number1,number2,number3;

printf("Enter phone number[(xxx)xxx-xxxx]:");
scanf("(%d)%d-%d",&number1,&number2,&number3);
printf("You entered:%.3d.%.3d.%.4d\n",number1,number2,number3);
return 0;

} 第7題 #include<stdio.h> int main () {

int number
printf("Enter a two-digit number:");
scanf("%d",&number);
printf("The reverse is:%d\n",number);
return 0;

}

第9題(1) #include<stdio.h> int main () {

int d,i1,i2,i3,i4,i5,i6,j1,j2,j3,j4,j5,total;
int first_sum,second_sum;
printf("Enter the first (single)digit:");
scanf("%d",d);
printf("Enter first group of five digits:");
scanf("%1d%1d%1d%1d%1d",&i1,&i2,&i3,&i4,&i5);
printf("Enter first group of five digits:");
scanf("%1d%1d%1d%1d%1d",&j1,&j2,&j3,&j4,&j5);
first_sum=d+i2+i4+j1+j3+j5;
second_sum=i1+i3+i5+j2+j4;
total=(first_sum*3+second_sum);
total=9-(total-1)%10;

printf("check digits:%d",check);
return 0;

}

(2) #include<stdio.h> int main() {

int d,i1,i2,i3,i4,i5,j1,j2,j3,j4,j5,total;
int first_sum,second_sum;
printf("Enter the first 11 didits of UPC:");
scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&d,&i1,&i2,&i3,&i4,&i5,&j1,&j2,&j3,&j4,&j5);
first_sum=d+i2+i4+j1+j3+j5;
second_sum=d+i1+i3+i5+j2+j4;
total=(first_sum*3+second_sum);
total=9-((total-1)%10);
printf("Check digits:%d\n",total);
return 0;

} 第10題 #include<stdio.h> int main () {

int i1,i2,i3,i4,i5,i6,i7,i8,i9,i10,i11,i12,total;
int first_sum,second_sum;
printf("Enter the first 12 digits of EAN:");
scanf("%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d%1d",&i1,&i2,&i3,&i4,&i5,&i6,&i7,&i8,&i9,&i10,&i11,&i12);
first_sum=i2+i4+i6+i8+i10+i12;
second_sum=i1+i3+i5+i7+i9+i11;
total=(first_sum+second_sum);
total=9-((total-1)%10);
printf("Check digit:%d\n",total);
return 0;

}