小学生计算机辅助教学系统试题

任务一：#includetime.h#includestdlib.h#includestdio.hmain(){intmagic1,magic2,m,n;charreply;srand(time(NULL));do{magic1=rand()%10+1;magic2=rand()%10+1;n=magic1*magic2;do{printf(%d*%d=m,inputm=\n,magic1,magic2);scanf(%d,&m);if(m!=n)printf(Wrong!pleasetryagain.\n);elseprintf(Right!\n);}while(m!=n);printf(Doyouwanttocontinue(Y/Nory/n)?);scanf(%c,&reply);}while(reply=='Y'||reply=='y');}任务二：任务三：#includetime.h#includestdlib.h#includestdio.hmain(){intmagic1,magic2,m,n,score,counter;srand(time(NULL));counter=0;score=0;do{magic1=rand()%10+1;magic2=rand()%10+1;n=magic1*magic2;printf(%d*%d=m,inputm=\n,magic1,magic2);scanf(%d,&m);counter++;if(m!=n)printf(Wrong!pleasetryagain.\n);else{printf(Right!\n);score++;}}while(counter10);printf(总分为%d,正确率为%d%%,score*10,(score%10)*10);}任务四：#includetime.h#includestdlib.h#includestdio.hvoidmain(){intmagic1,magic2,counter,score,t;floatm,n;chara;srand(time(NULL));counter=0;score=0;do{magic1=rand()%10+1;magic2=rand()%10+1;t=rand()%4;if(t==0){a='+';n=magic1+magic2;}if(t==1){a='-';n=magic1-magic2;}if(t==2){a='*';n=magic1*magic2;}if(t==3){a='/';n=magic1/magic2;}printf(%d%c%d=m,inputm=,magic1,a,magic2);scanf(%f,&m);counter++;if(m!=n)printf(wrong!\n);else{printf(Right!\n);score++;}}while(counter10);printf(总分为%d,正确率为%d%%,score*10,(score%10)*10);}