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()2.2#include<stdio.h> #include<math.h> main()printf(Input a,b:n);printf(%gn,sqrt(a);int a,b ;scanf(%d%d,&a,&b);if (a>b)else printf(%gn,sqrt(b);2.3#include<stdio.h>main()-float a;prin

2、tf(Input a:n);scanf(%g,&a);printf(he square of a=%gtacubed=%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(%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);sca

3、nf(%d,&n);a=n_x0010_; b=n/10_x0010_; c=n/100_x0010_; d=n/1000_x0010_;e=n/10000;s=a+b+c+d+e;printf(%dn,s);3.2#include<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

4、华氏温度：n);scanf(%f,&f);c=5.0/9*(f-32);printf(摄氏温度为=%.2fn,c);3.4#include<stdio.h>#include<math.h>main()float a,b,c,S,p;输入三角形的三条边长：printf( );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

5、(该三角形不存在n);3.5#include<stdio.h>main()-printf(AAaBBn);printf(AAbBBn);printf(AAnBBn);printf(AArBBn);printf(AAtBBn);-printf(AAvBBn);printf(AA'BBn);printf(AABBn);printf(AABBn);printf(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;print

6、f(%cn,zimu);3.7#include<stdio.h>main()char a,b,c;:n); printf(请输入两个字符scanf(%ct%c,&a,&b);c=a;a=b;b=c;printf(%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);depos

7、it=capital+capital*rate/100*n;printf(%lfn,deposit);3.9#include<stdio.h>#include<math.h>main()float a,b,c=9;请输入该销售员的销售printf( :n);额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,a);elseprintf(%d

8、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;请输入一个考试分数printf(:);scanf(%f,&a);if (a<0|a>100)printf(数据错误n);else if (a<60)pr

9、intf(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;:n); printf(输入员工工作时间-scanf(%f,&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(不及格else if(a<80)printf(数据错误n);else if (a<60)n);else if(a<70)printf(及格n);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(Input x:n);scanf(%f,&x);if (x&