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>void main()printf("%gn",fabs(-6)+16.3*5.4);2.2#include<stdio.h>#include<math.h>main()int a,b ;printf("Input a,b:n");scanf("%d%d",&a,&b);if (a>b)printf("%gn",

2、sqrt(a);else printf("%gn",sqrt(b);2.3#include<stdio.h>main()float a;printf("Input a:n");scanf("%g",&a);printf("the square of a=%gta cubed=%gn",a*a,a*a*a);2.4#include<stdio.h>main()float a,b,c,d,sum;printf("Input a,b,c,d:n");scanf(&quo

3、t;%f%f%f%f",&a,&b,&c,&d);sum=a+b+c+d;printf("%fn",sum/4);2.5#include <stdio.h>main()int n,a,b,c,d,e,s;printf("请输入一个五位数：n");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&l

4、t;stdio.h>main()float r,C,S;printf("Input r :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()float f,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 =%.2f

5、n",c);3.4#include<stdio.h>#include<math.h>main()float a,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&

6、quot;);3.5#include<stdio.h>main()printf("AAaBBn");printf("AAbBBn");printf("AAnBBn");printf("AArBBn");printf("AAtBBn");printf("AAvBBn");printf("AA'BBn");printf("AA"BBn");printf("AABBn");printf(&qu

7、ot;AA?BBn");3.6#include<stdio.h>main()char zimu;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()char a,b,c;printf("请输入两个字符:n");scanf("%ct%c",&a,&b);c=a;a=b;b=c;printf("

8、;%ct%cn",a,b);3.8#include<stdio.h>#include<math.h>main()float rate=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

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

10、t;,a);elseprintf("%d为奇数 n",a);4.2#include<stdio.h>main()char c;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()float a;printf(&quo

11、t;请输入一个考试分数:");scanf("%f",&a);if (a<0|a>100)printf("数据错误 n");else if (a<60)printf("不及格 n");else if(a<90)printf("合格 n");elseprintf("优秀 n");4.4#include<stdio.h>main()float a,b;printf("输入员工工作时间:n");scanf("%f&quo

12、t;,&a);if (a>=0&&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()float a;printf("请输入一个考试分数:");scanf("%f",&a);if (a<0|a>100)printf("数据错误 n");else if (a<60)printf("不及格 n");else if(a<70)printf("及格 n");else if(a<80)printf("中 n");else if(a<90)printf("良 n");elseprintf("优 n");4.6#include<stdio.h>#include<math.h>main()float x,y;printf(&quo