C语言程序设计答案

1、C语言程序设计(第三版)黄保和江弋主编第一到四章编程题答案2.1#include<stdio.h>#include<math.h>voidmain()printf("%gn",fabs(-6)+16.3*5.4);2.2#include<stdio.h>#include<math.h>main()inta,b;printf("Inputa,b:n");scanf("%d%d",&a,&b);if(a>b)printf("%gn",sqrt(a);

2、elseprintf("%gn",sqrt(b);2.3#include<stdio.h>main()floata;printf("Inputa:n");scanf("%g",&a);printf("thesquareofa=%gtacubed=%gn",a*a,a*a*a);2.4#include<stdio.h>main()floata,b,c,d,sum;printf("Inputa,b,c,d:n");scanf("%f%f%f%f",

3、&a,&b,&c,&d);sum=a+b+c+d;printf("%fn",sum/4);2.5#include<stdio.h>main()intn,a,b,c,d,e,s;n");n");printf("请输入一个五位数：scanf("%d",&n);a=n%10;b=n/10%10;c=n/100%10;d=n/1000%10;e=n/10000;s=a+b+c+d+e;printf("%dn",s);3.2#include<stdio.h&

4、gt;main()floatr,C,S;printf("Inputr:n");scanf("%f",&r);C=2*3.14159*r;S=3.141459*r*r;printf("C=%.2ftS=%.2fn",C,S);3.3#include<stdio.h>main()floatf,c;printf("请输入华氏温度：n");scanf("%f",&f);c=5.0/9*(f-32);printf("摄氏温度为=%.2fn",c);3.4#i

5、nclude<stdio.h>#include<math.h>main()floata,b,c,S,p;printf("输入三角形的三条边长：");scanf("%f%f%f",&a,&b,&c);if(a+b>c&&b+c>a&&c+a>b)p=(a+b+c)/2;S=sqrt(p*(p-a)*(p-b)*(p-c);printf("S=%f",S);elseprintf("该三角形不存在n");3.5#includ

6、e<stdio.h>main()printf("AAaBBn");printf("AAbBBn");printf("AAnBBn");printf("AArBBn");printf("AAtBBn");printf("AAvBBn");printf("AA'BBn");printf("AA"BBn");printf("AABBn");printf("AA?BBn");

7、3.6#include<stdio.h>main()charzimu;printf("请输入小写英文字母:");scanf("%c",&zimu);zimu=zimu-32;printf("%cn",zimu);3.7#include<stdio.h>main()chara,b,c;printf("请输入两个字符:n");scanf("%ct%c",&a,&b);c=a;a=b;b=c;printf("%ct%cn",a,b);

8、3.8#include<stdio.h>#include<math.h>main()floatrate=3.25,capital,n,deposit;printf("请输入存款本金:");scanf("%f",&capital);printf("请输入存款期:");scanf("%f",&n);deposit=capital+capital*rate/100*n;printf("%lfn",deposit);3.9#include<stdio.h&g

9、t;#include<math.h>main()floata,b,c=9;:n");:n");printf("请输入该销售员的销售额scanf("%f",&a);b=1000+a*c/100;printf("%fn",b);4.1#include<stdio.h>main()inta;printf("请输入一个整数:n");scanf("%d",&a);if(a%2=0)printf("%d为偶数n",a);elseprint

10、f("%d为奇数n",a);4.2#include<stdio.h>main()charc;printf("请输入一个字符:n");scanf("%c",&c);if(c>='A'&&c<='Z')c=c+32;printf("%cn",c);elseprintf("%cn",c);4.3#include<stdio.h>main()floata;printf("请输入一个考试分数:"

11、);scanf("%f",&a);if(a<0|a>100)printf("数据错误n");elseif(a<60)printf("不及格n");elseif(a<90)printf("合格n");elseprintf("优秀n");4.4#include<stdio.h>main()floata,b;printf("输入员工工作时间:n");scanf("%f",&a);if(a>=0&&

12、amp;a<=40)b=10*a;if(a>40)b=400+15*(a-40);printf("工资为:%fn",b);4.5#include<stdio.h>main()floata;printf("请输入一个考试分数：”);scanf("%f",&a);if(a<0|a>100)printf(”数据错误n”);elseif(a<60)printf("不及格n");elseif(a<70)printf("及格n");elseif(a<80)printf("中n”);elseif(a<90)printf("良n");elseprintf("优n");4.6#include<stdio.h>#include<math.h>main()floatx,y;printf("