模拟小学生加减乘除混合运算
#include <stdio.h>
#include <stdlib.h>
int get_choice();
void show_menu();
void do_exercise(int);
int test(int);
int main(int argc, const char *argv[])
{
int choice;
do
{
show_menu();
choice = get_choice();
if (0 == choice)
{
break;
}
do_exercise(choice);
sleep(2);
system("clear");
} while (choice != 0);
printf("\n welcome to use this software, goodbye!\n");
return 0;
}
int get_choice()
{
int choice;
scanf("%d", &choice);
return choice;
}
void show_menu()
{
printf("===============================================\n");
printf("\twelcome to use calculator-software for pupil\n");
printf("\t1.Addition Practise 2.Subtration Practise\n");
printf("\t3.Multiplation Practise 4.Division Practise\n");
printf("\t5.General Practise 0.Quit System\n");
printf("===============================================\n");
printf("Please input your choice(0~5)\n");
}
void do_exercise(int n)
{
int score = 0;
int i;
for(i = 1; i <= 10; i++)
score = score + test(n);
printf("This practise ten question you did %d the right thing and way\n", score);
}
int test(int n)
{
int ranswer;
int uanswer;
int t;
char operator;
srand(time(NULL));
int num1 = rand() % 10;
int num2 = rand() % 10;
if (5 == n)
n = rand() % 4 + 1;
switch(n)
{
case 1:
operator = '+';
break;
case 2:
operator = '-';
break;
case 3:
operator = '*';
break;
case 4:
operator = '/';
break;
default:
break;
}
if ((operator == '-') && (num1 < num2))
{
t = num1;
num1 = num2;
num2 = t;
}
if (operator == '/')
{
if (num2 == 0)
num2 = 1;
num1 = num1 * num2;
}
printf("%d %c %d\n", num1, operator, num2);
scanf("%d", &uanswer);
switch (operator)
{
case '+':
ranswer = num1 + num2;
break;
case '-':
ranswer = num1 - num2;
break;
case '*':
ranswer = num1 * num2;
break;
case '/':
ranswer = num1 / num2;
break;
}
if (uanswer == ranswer)
{
printf("you do it right!\n");
return 1;
}
else
{
printf("you do it default!\n");
return 0;
}
}
运行结果：
[haoyue@centos practices]$ ./a.out
===============================================
welcome to use calculator-software for pupil
1.Addition Practise 2.Subtration Practise
3.Multiplation Practise 4.Division Practise
5.General Practise 0.Quit System
===============================================
Please input your choice(0~5)
1
1 + 5
6
you do it right!
5 + 6
11
you do it right!
8 + 7
15
you do it right!
4 + 6
10
you do it right!
6 + 7
13
you do it right!
1 + 7
8
you do it right!
1 + 8
9
you do it right!
6 + 0
6
you do it right!
5 + 6
11
you do it right!
1 + 2
3
you do it right!
This practise ten question you did 10 the right thing and way
===============================================
welcome to use calculator-software for pupil
1.Addition Practise 2.Subtration Practise
3.Multiplation Practise 4.Division Practise
5.General Practise 0.Quit System
===============================================
Please input your choice(0~5)
2
7 - 0
7
you do it right!
9 - 2
7
you do it right!
7 - 4
3
you do it right!
8 - 1
7
you do it right!
8 - 0
8
you do it right!
3 - 0
3
you do it right!
7 - 6
1
you do it right!
9 - 5
4
you do it right!
3 - 2
1
you do it right!
9 - 3
6
you do it right!
This practise ten question you did 10 the right thing and way
===============================================
welcome to use calculator-software for pupil
1.Addition Practise 2.Subtration Practise
3.Multiplation Practise 4.Division Practise
5.General Practise 0.Quit System
===============================================
Please input your choice(0~5)
5
4 + 0
4
you do it right!
5 * 8
40
you do it right!
7 + 7
14
you do it right!
1 + 8
9
you do it right!
4 - 0
4
you do it right!
8 - 1
7
you do it right!
56 / 7
8
you do it right!
1 + 4
5
you do it right!
2 - 1
1
you do it right!
4 - 1
3
you do it right!
This practise ten question you did 10 the right thing and way
===============================================
welcome to use calculator-software for pupil
1.Addition Practise 2.Subtration Practise
3.Multiplation Practise 4.Division Practise
5.General Practise 0.Quit System
===============================================
Please input your choice(0~5)
0
welcome to use this software, goodbye!