c语言程序设计课后习题参考答案.doc

C语言程序设计课后****题解答(仅供参考****题一一、、填空题1.../**/4.#include<>inta,b;a,b三、简答题(略****题二一、、、04.(1)a>=0(2).-,710.-、,0,,c四、编程题1.#include<>#(){floatr,s;printf(“Pleaseinputcircinalradii\n”);scanf(“%f”,&r);s=PI*r*r;printf(“r=%.2f,s=%.2f\n”,r,s);}2.#include<>voidmain(){charc1,c2;printf(“Pleaseinputamajuscule\n”);scanf(“%c”,&c1);c2=c1>’A’&&c1<’Z’?c1+32:c1;printf(“%c\n”,c2);}3.#include<>voidmain(){inta=0,b;scanf(“%c”,&b);b=b&a;printf(“b=%d\n”,b****题三一、=(c-=a-5),(a=b,b+3);答案为B否则输出结果为5,0,、填空题1.-50300、a=-50,b=300a=-50b=、10,20,30、a=10,b=20,c=、0、0三、=,a=,a=,a==15,b=17,b==1,x=0,y=0,z=,,125在VC环境下为216,=A,b=d,c=,4,12,=,y=4,x+y=、编程题1.#include<>voidmain(){printf("**********************************\n");printf("HAPPYNEWYEAR!\n");printf("**********************************\n");}2.(1)#include<>voidmain(){inta=5,b=8,c=10,m,max;m=a>b?a:b;max=c>m?c:m;printf(“max=%d\n”,max);}(2)#include<>voidmain(){inta,b,c,m,max;scanf("%d,%d,%d",&a,&b,&c);max=a>b?a:(b>c?b:c);printf(“max=%d\n”,max****题四一、、、5、52.(a%3==0||a%7==0)3.(1)a>b(2)a=c;(3)a,b,c三、=7,b=.*#46四、#include<>voidmain(){floata,b,c,t;scanf("%f,%f,%f",&a,&b,&c);if(a>b){t=a;a=b;b=t;}if(a>c){t=a;a=c;c=t;}if(b>c){t=b;b=c;c=t;}printf(“%.2f,%.2f,%.2f\n”,a,b,c);}2.#include<>voidmain(){inta,b;scanf("%d,%d",&a,&b);if(a%b==0)printf(“%disdivisibleby%d\n”,a,b);elseprintf(“%disnotdivisibleby%d\n”,a,b);}3.(1)#include<>voidmain(){intx,y;scanf(“%d”,&x);if(x>-5&&x<0)y=x;printf("y=%d\n",y);elseif(x==0)y=x-1;printf("y=%d\n",y);elseif(x>0&&x<10)y=x+1;printf("y=%d\n",y);el