程序设计技术习题编程题参考答案重庆大学

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1、《程序设计技术》（第三版）习题参考答案及说明习题1四、程序设计题//xt010401.cpp#include#definePI3.1415926voidmain(){doubler,h;printf("请输入半径r和高h：");scanf("%lf,%lf",&r,&h);printf("圆半径:%lf",2*PI*r);printf("圆面积：%lf",PI*r*r);printf("圆球表面积：%lf",4*PI*r*r);printf("圆球体积：%lf",4.0/

2、3*PI*r*r);printf("圆柱体积：%lf",PI*r*r*h);}//xt010402.cpp#includevoidmain(){intc;printf("Inputacharacter:");c=getchar();printf("%ct%d",c,c);}//xt010403.cpp#includevoidmain(){intx,y,h=30,f=90;x=(4*h-f)/2;y=(f-2*h)/2;printf("鸡：%d,兔：%d",

3、x,y);-1-}//xt010404.cpp#include#includevoidmain(){doublea,b,c,s,area;printf("请输入三角形的三条边长（注意三条边长应能够构成三角形）：");scanf("%lf,%lf,%lf",&a,&b,&c);s=(a+b+c)/2;area=sqrt(s*(s-a)*(s-b)*(s-c));printf("三角形的面积是:%lf",area);}//xt010405.cpp#include

4、o.h>voidmain(){doublef,c;printf("请输入华氏温度：");scanf("%lf",&f);c=5.0/9.0*(f-32);printf("与华氏温度%.2lf对应的摄氏温度是：%.2lf",f,c);}//xt010406.cpp#includevoidmain(){charc1,c2,c3,c4,c5;printf("请输入需加密的字符串（5个字符）：");c1=getchar();c2=getchar();c3=getchar();c4=getch

5、ar();c5=getchar();printf("加密后的字符串是：");putchar(c1+5);putchar(c2+5);putchar(c3+5);-2-putchar(c4+5);putchar(c5+5);printf("");}习题2四、程序设计题/*xt020401.cpp*/#includevoidmain(){intnum;printf("****Inputnum:****");scanf("%d",&num);if(num%3==0&&num%5==0&

6、&num%7==0)printf("**YES!**");elseprintf("**NO!**");}/*xt020402.cpp*/#includevoidmain(){inth=15;floatx1=2,y1=2,x2=-2,y2=2,x3=-2,y3=-2,x4=2,y4=-2,x,y,d1,d2,d3,d4;printf("***input:x,y***");scanf("%f,%f",&x,&y);d1=(x-x4)*(x-x4)+(y-y4)*(y-y4);/*

7、点（x,y）到各中心点的距离*/d2=(x-x1)*(x-x1)+(y+y1)*(y+y1);d3=(x-x2)*(x-x2)+(y-y2)*(y-y2);d4=(x+x3)*(x+x3)+(y+y3)*(y+y3);if(d1>1&&d2>1&&d3>1&&d4>1)/*判断该点是否在塔外*/h=0;printf("x=%f,y=%f",x,y);printf("h=%d",h);}调试该程序时请输入两组数据：0.5，0.72.1，2.3/*xt020403.cpp*/-3-#include

8、tdio.h>voidmain(){inti,j,k,n;for(n=100;n<=999;n++){i=n/100;j=n/10-i*10;k=n%10;if(n==i*i*i+j*j*j+k*k*k)printf("%d",n);}}/*xt020404.cpp*/#include#include#defineEPS1.0e-6voidmain(){floate=1,t;longint