网站建设订流量什么意思莱芜网站优化有哪些

目录

第1关：快递费用计算

任务描述

答案代码

第2关：计算一元二次方程的根

任务描述

答案代码

第3关：产品信息格式化

任务描述

答案代码

第4关：字母转换

任务描述

答案代码

第5关：输出最大最小数

任务描述

答案代码

第6关：日期

任务描述

答案代码

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第1关：快递费用计算

任务描述

答案代码

#include<stdio.h>
#include<math.h>int main(void){  /*********Begin*********/int q;float weight;scanf("%d,%f",&q,&weight);if(q==0)printf("Price: %.2f\n",10+3.0*ceil(weight-1));else if(q==1)printf("Price: %.2f\n",10+4.0*ceil(weight-1));else if(q==2)printf("Price: %.2f\n",15+5.0*ceil(weight-1));else if(q==3)printf("Price: %.2f\n",15+6.5*ceil(weight-1));else if(q==4)printf("Price: %.2f\n",15+10.0*ceil(weight-1));else{printf("Error in Area\n");printf("Price: 0.00");}/*********End**********/ return 0;}

第2关：计算一元二次方程的根

任务描述

答案代码

#include<math.h>
#include<stdio.h>int main(void){  double a,b,c,d;double x1,x2;printf("Please enter the coefficients a,b,c:\n");scanf("%lf,%lf,%lf",&a,&b,&c);if(a==0){printf("error!\n");}else {d=(b*b)-(4*a*c);if(d>0){  x1=(-b+sqrt(d))/(2.0000*a);x2=(-b-sqrt(d))/(2.0000*a);printf("x1=%.4f, x2=%.4f\n",x1,x2);}else if(d==0){x1=x2=-b/(2.0000*a);printf("x1=%.4f, x2=%.4f\n",x1,x2);}else if(d<0){printf("error!\n");}}return 0;}

第3关：产品信息格式化

任务描述

答案代码

#include<stdio.h>int main(){  /*********Begin*********/int item = 0,mm = 0, dd = 0,yy = 0;double unit = 0;printf("Enter item number:\n");scanf("%d",&item);printf("Enter unit price:\n");scanf("%lf",&unit);printf("Enter purchase date (mm/dd/yy):\n");scanf("%d/%d/%d",&mm,&dd,&yy);printf("Item Unit Purchase\n");printf("%-9d$ %-9.2f%02d%02d%02d\n",item,unit,mm,dd,yy);/*********End**********/ return 0;}

第4关：字母转换

任务描述

答案代码

#include  <stdio.h>
int main()
{ char c1,c2;c1=getchar();if(c1>='A'&&c1<='Z'){/*****以下一行有错误*****/c2=c1+32;if(c2>='a' && c2<='u')/*****以下一行有错误*****/c2=c2+5;else  if(c2>='v' && c2<='z')	c2=c2-21;printf("The letter %c change to %c\n",c1,c2);}return 0;
}

第5关：输出最大最小数

任务描述

答案代码

/********** Begin **********/
#include<stdio.h>
int main(void)
{int a,b,c,max,min;scanf("%d%d%d",&a,&b,&c);if(a>b){max=a;min=b;}else{max=b;min=a;}if(c>max){max=c;min=min;}else{if(c<b) min=c;else min=b;}printf("max = %d\n",max);printf("min = %d",min);return 0;
}/********** End **********/

第6关：日期

任务描述

答案代码

#include  <stdio.h>#define THIRTY_ONE 31
#define THIRTY 30
#define LEAP_MOUTH 29
#define NO_LEAP_MOUTH 28int judgeyear(int year){int day=28;if((year%4==0 && year%100!=0) || year % 400 == 0){day=29;}return day;}
int main()
{int sequence=0;int year,mouth,day;/*printf("请输入年月日（用-隔开）:");*/scanf("%d%*c%d%*c%d",&year,&mouth,&day);switch(mouth){case 12:case 11:sequence+=+(mouth>11)*30;case 10:sequence+=+(mouth>10)*31;case 9:sequence+=+(mouth>9)*31;case 8:sequence+=+(mouth>8)*30;case 7:sequence+=+(mouth>7)*31;case 6:sequence+=+(mouth>6)*30;case 5:sequence+=+(mouth>5)*31;case 4:sequence+=+(mouth>4)*30;case 3:sequence+=+(mouth>3)*31;case 2:sequence+=+(mouth>2)*judgeyear(year);case 1:sequence+=+(mouth>1)*31;sequence +=day;}printf("%d",sequence);return 0;
}