C语言课程设计报告_小学算数程序|c语言程序代码编程小程序设计|c语言课程设计报告课程案例
#include #include #include
main(){for (;;){ switch (menu()){ case '1':test();break; case '2':practise();break; case '3':exit(0); } }}
menu(){char c;do{ clrscr(); printf("\n 1.测试\n"); printf(" 2.练习\n"); printf(" 3.退出\n"); printf("\n请选择(1或2或3):"); c=getche(); }while(c<'1'||c>'3');return c;}
test(){int ts,i,m,n,s,r=0;ts=numsoftest();randomize();for (i=1;i<=ts;i++){ do { m=num();n=num(); }while ((m+n)>9); printf("%d) %d+%d=",i,m,n); scanf("%d",&s); if (s==m+n) r++; }printf("成绩:%d\n",100*r/ts);printf("按任意键继续...");getch();}
numsoftest(){int n;clrscr();do{ printf("\n请输入题数(10～20):"); scanf("%d",&n); }while (n<10||n>20);return n;}
practise(){int ts,i,m,n,s;ts=numsoftest();randomize();for (i=1;i<=ts;i++){ do { m=num();n=num(); }while ((m+n)>9); printf("%d) %d+%d=",i,m,n); scanf("%d",&s); if (s==m+n) right(); else wrong(); }printf("按任意键继续...");getch();}
num(){return random(9);}
right(){printf("正确\n");}
wrong(){printf("错误\n");}
