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/-------------------------------------------------------【程序填空】-------------------------------------------------------题目:输入成绩x,输出相应的等级y。y='A'(85<=x<=100)y='B'(70<=x<85)y='C'(60<=x<70)y='D'(x<60)请在空内填入正确的内容。-----------------------------------------------------/#includemain(){intx;chary;scanf("%d",&x);/*****SPACE/switch(){case10:case9:y='A';break;/SPACE/y='C';break;/SPACE/case8:switch(){/SPACE/case0:case1:case2:case3:case4:/SPACE*****/default:;}break;case7:y='B';break;default:y='D';}printf("成绩%d的等级是%c\n",x,y);}

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/-------------------------------------------------------【程序填空】-------------------------------------------------------题目:输入a,b求解方程ax-b=0的解,请填空。-----------------------------------------------------/#includemain(){/*****SPACE/a,b,x;printf("按次序输入a,b:\n");/SPACE/scanf("%lf,%lf",);/SPACE/if()/SPACE/if()printf("方程的根是全体实数\n");elseprintf("方程无实根\n");else{/SPACE*****/printf("方程的根是:%f\n",x);}}

/-------------------------------------------------------【程序填空】-------------------------------------------------------题目:某地电信公司规定,拨打市内电话时,如果通话时间不超过3分钟,按0.22元收取通话费,超过3分钟,则超过部分按每分钟0.1元收费,不足1分钟按1分钟计算。输入通话时间x(不考虑负数),计算出相应的通话费用y。y=0.22(x<=3)y=0.22+0.1(x-3)(x为大于3的整分钟)y=0.22+0.1([x-3]+1)(x为大于3的非整分钟)其中[x-3]为取整请在空内填入正确的内容。-----------------------------------------------------/#includemain(){floatx,y;/*****SPACE//SPACE/if()y=0.22;/SPACE*****/elseif(x-x==0)y=0.22+0.1(x-3);else/SPACE/y=0.22+0.1((x-3)+1);/SPACE/printf("通话%f分钟的通话费为%f\n",);}

/-------------------------------------------------------【程序填空】-------------------------------------------------------题目:输入年y,月m,计算出该年该月有多少天。其中判断闰年的条件是:能被4整除但不能被100整除的年是闰年,能被400整除的年也是闰年。请在空内填入正确的内容。-----------------------------------------------------/#includemain(){intd,y,m,t;printf("请按次序输入年,月\n");scanf("%d,%d",&y,&m);/SPACE/if(y%4==0y%400==0)/不要使用空格/t=1;elset=0;/*****SPACE/switch(){case1:case3:case5:case7:case8:case10:case12:d=31;break;/SPACE/case4:case6:case9:case11:/SPACE/case2:d=;}/SPACE*****/printf("%d年的%d月有%d天\n",);}

Loving nature, however, I was most delighted by the endless patchwork of farms and woodland that surrounded our house.(para. 2)