计算机c语言课后答案

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1、计算机C语言课后答案==============Chap2===============二、选择题BDCBABBDAACAAABDCCD20.ABDEGJ21.ADE三、编程题1.#include#definePI3.14159main(){floatr,v;printf("entertheradius:");scanf("%f",&r);v=PI*r*r;printf("thevolumeis%f",v);}2.#include#includemain(){float

2、a,b,c,d;printf("entera,b:");scanf("%f,%f",&a,&b);c=(a>b?a:b);d=sqrt(c);printf("thesquarerootofthebiggeroneis%f",d);}3.#includemain(){floata,b,c;printf("entera:");scanf("%f",&a);b=a*a;c=a*a*a;printf("thesquareis%f,thecubeis%f",b,c);}4.#includem

3、ain(){floata,b,c,d,ave;printf("entera,b,c,d:");scanf("%f,%f,%f,%f",&a,&b,&c,&d);ave=(a+b+c+d)/4;printf("theaverageis%f",ave);}********************************#includemain(){floata,i,ave;for(i=1;i<=4;i++){printf("enteranumber:");scanf("%f",&a);ave=ave+a;}pr

4、intf("theaverageis%f",ave/4);}5.#includemain(){inta,b,c,d,e,n,f;printf("entera5digitalnumber(<32767):");scanf("%d",&n);a=n%10;b=n/10%10;c=n/100%10;d=n/1000%10;e=n/10000;f=a+b+c+d+e;printf("%d+%d+%d+%d+%d=%d",e,d,c,b,a,f);}6.(1)-3.2(2)6.33333337.10,9,20,108

5、.(1)52(2)11(3)91(4)1(5)0(6)09.#definetax_of_rate0.08main(){floatcost,shipping,total;printf("enterthecostoftheitem:");scanf("%f",&cost);printf("entertheshippingcharge:");scanf("%f",&shipping);total=cost+shipping+cost*tax_of_rate;printf("thetotalis%f",total);}=======

6、=======Chap3===============二、选择题?DDABAC三、编程题1.#includemain(){inta=3,b=4,c=5;floatx=1.2,y=2.4,z=-3.6;longu=51274,n=128765;charc1='a',c2='b';printf("a=%db=%dc=%d",a,b,c);printf("x=%f,y=%f,z=%f",x,y,z);printf("x+y=%.2fy+z=%.2fz+x=%.2f",x+y,y+z,z+x);prin

7、tf("u=%ldn=%ld",u,n);printf("c1='%c'or%d(ascii)c2='%c'or%d(ascii)",c1,c1,c2,c2);}2.575767.856400,-789.12400067.856400,-789.12400067.86,-789.12,67.8564,-789.1240,67.856400,-789.1240006.785640e+001,-7.89e+002a,97,141,611234567,4553207,12d68765535,177777,ffff,6553

8、5computer,com3.1020aa1.5-3.751,67.84.#include#definePI3.1415926main(){floatr,s,v;printf("enterr:");scanf("%f",&r);v=4/3*PI*r*r*r;s=4*PI*