ข้อที่ 1

แสดงผล

ข้อ 2
main(){
int a=0;
do{
clrscr();
printf("-----Select Menu-----\n");
printf("1.Sum\n2.Multiply\n3.Maximum\n4.Minimum\n5.Average\n6.Exit\n\n");
printf("Select number 1-6 : ");
scanf("%d",&a);
switch(a){
case 1:printf("Select Sum");getch();break;
case 2:printf("Select Multiply");getch();break;
case 3:printf("Select Maximum");getch();break;
case 4:printf("Select Minimum");getch();break;
case 5:printf("Select Average");getch();break;
case 6:printf("Exit Selection");getch();break;
}
}
while(a!=6);
getch();
}
แสดงผล




ข้อ 3
main(){
int x=0,a=-1,sum=0,max=0,min=0;
double avg=0;
clrscr();
printf("Input integer number -99 Exit : ");
scanf("%d",&x);
max=x;
min=x;
while(x!=-99){
sum=sum+x;
a=a+1;
if(x>max){
max=x;
}
else if (x<min){
min=x;
}
printf("Input integer number -99 Exit : ");
scanf("%d",&x);
}
avg=sum/a;
printf("Maximum=%d\n",max);
printf("Minimum=%d\n",min);
printf("Average=%f\n",avg);
getch();
}
แสดงผล

ข้อ 4

แสดงผล


ข้อ ตัดเกรด 8 เกรด
main(){
int score;
clrscr();
printf("Input score : ");
scanf("%d",&score);
if(score<=100&&score>=0){
switch(score/5){
case 20:printf("Your grade is A");getch();break;
case 19:printf("Your grade is A");getch();break;
case 18:printf("Your grade is A");getch();break;
case 17:printf("Your grade is A");getch();break;
case 16:printf("Your grade is B+");getch();break;
case 15:printf("Your grade is B");getch();break;
case 14:printf("Your grade is C+");getch();break;
case 13:printf("Your grade is C");getch();break;
case 12:printf("Your grade is D");getch();break;
case 11:printf("Your grade is D+");getch();break;
default:printf("Your grade is F");getch();break;
}
}
else
printf("You input wrong score");;
getch();
}
แสดงผล



