------------------------------------------------------------------------摘自宋鲁生程序设计大赛
乘法口诀表
#include <stdio.h>
#include <conio.h>
void main(void)
{
int i,j,x,y;
clrscr();
printf("\n\n * * * 乘法口诀表* * * \n\n");
x=9;
y=5;
for(i=1;i<=9;i++)
{
gotoxy(x,y);
printf("%2d ",i);
x+=3;
}
x=7;
y=6;
for(i=1;i<=9;i++)
{
gotoxy(x,y);
printf("%2d ",i);
y++;
}
x=9;
y= 6;
for(i=1;i<=9;i++)
{
for(j=1;j<=9;j++)
{
gotoxy(x,y);
printf("%2d ",i*j);
y++;
}
y-=9;
x+=3;
}
printf("\n\n");
}
用一维数组统计学生成绩
#include <stdio.h>
void main()
{
char SelectKey,CreditMoney,DebitMoney;
while(1)
{
do{
clrscr();
puts("=========================");
puts("| Please select key: |");
puts("| 1. Quary |");
puts("| 2. Credit |");
puts("| 3. Debit |");
puts("| 4. Return |");
puts("=========================");
SelectKey = getch();
}while( SelectKey!='1' && SelectKey!='2' && SelectKey!='3' &&
SelectKey!='4' );
switch(SelectKey)
{
case '1':
clrscr();
puts("================================");
puts("| Your balance is $1000. |");
puts("| Press any key |");
puts("================================");
getch();
break;
case '2':
do{
clrscr();
puts("==================================");
puts("| Please select Credit money: |");
puts("| 1. $50 |");
puts("| 2. $100 |");
puts("| 3. Return |");
puts("==================================");
CreditMoney = getch();
}while( CreditMoney!='1' && CreditMoney!='2' && CreditMoney!='3' );
switch(CreditMoney)
{
基础c语言代码case '1':
clrscr();
puts("=========================================");
puts("| Your Credit money is $50,Thank you! |");
puts("| Press any key |");
puts("=========================================");
getch();
break;
case '2':
clrscr();
puts("==========================================");
puts("| Your Credit money is $100,Thank you! |");
puts("| Press any key |");
puts("==========================================");
getch();
break;
case '3':
break;
}
break;
case '3':
do{
clrscr();
puts("====================================");
puts("| Please select Debit money: |");
puts("| 1. $50 |");
puts("| 2. $100 |");
puts("| 3. $500 |");
puts("| 4. $1000 |");
puts("| 5. Return |");
puts("====================================");
DebitMoney = getch();
}while( DebitMoney!='1' && DebitMoney!='2' && DebitMoney!='3' &&DebitMoney!='4' && DebitMoney!='5' );
switch(DebitMoney)
{
case '1':
clrscr();
puts("===========================================");
puts("| Your Debit money is $50,Thank you! |");
puts("| Press any key |");
puts("===========================================");
getch();
break;
case '2':
clrscr();
puts("===========================================");
puts("| Your Debit money is $100,Thank you! |");
puts("| Press any key |");
puts("===========================================");
getch();
break;
case '3':
clrscr();
puts("===========================================");
puts("| Your Debit money is $500,Thank you! |");
puts("| Press any key |");
puts("===========================================");
getch();
break;
case '4':
clrscr();
puts("===========================================");
puts("| Your Debit money is $1000,Thank you! |");
puts("| Press any key |");
puts("===========================================");
getch();
break;
case '5':
break;
}
break;
case '4':
clrscr();
puts("================================");
puts("| Thank you for your using! |");
puts("| Good bye! |");
puts("================================");
return;
}
}
模拟ATM（自动柜员机）界面
#include <stdio.h> void main()
{
int Password=0,Number=0,price=58,i=0;
while( Password != 1234 )
{
if( i >= 3 )
return;
i++;
puts("Please input Password: ");
scanf("%d",&Password);
}
i=0;
while( Number!=price )
{
do{
puts("Please input a number between 1 and 100: ");
scanf("%d",&Number);
printf("Your input number is %d\n",Number);
}while( !(Number>=1 && Number<=100) );
if( Number >= 90 )
{
printf("Too Bigger! Press any key to try again!\n");
}
else if( Number >= 70 && Number < 90 )
{
printf("Bigger!\n");
}
else if( Number >= 1 && Number <= 30 )
{
printf("Too Small! Press any key to try again!\n");
}
else if( Number > 30 && Number <= 50 )
{
printf("Small! Press any key to try again!\n");
}
else
{
if( Number == price )
{

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