C语言程序设计(张淑华、朱丽莉版)课后习题参考答案.doc

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1、C语言程序设计（张淑华、朱丽莉主编）课后习题解答（仅供参考）习题一一、选择题1．B2．D3．B4．A5．B6．C7．C二、填空题1．.obj2．函数3．/**/4．#includeinta,b;a,b三、简答题(略)习题二一、选择题1．B2．B3．A4．D5．A6．C7．C8．A9．C10．B11．A12．A13．C14．A15．C二、填空题1．变量2．存储数据的单元3．非0、04．(1)a>=0(2)05．16．17．-308．389．4,710．-617777211．9.912．7三、写出下列程序的运行结果1．0，0，52．183．

2、6451284．55．d4,c四、编程题1．#include#definePI3.1415926voidmain(){floatr,s;printf(“Pleaseinputcircinalradii”);scanf(“%f”,&r);s=PI*r*r;printf(“r=%.2f,s=%.2f”,r,s);}2．#includevoidmain(){charc1,c2;printf(“Pleaseinputamajuscule”);scanf(“%c”,&c1);c2=c1>’A’&&c1<’Z’?c1+

3、32:c1;printf(“%c”,c2);}3．#includevoidmain(){inta=0,b;scanf(“%c”,&b);b=b&a;printf(“b=%d”,b);}习题三一、选择题1．C2．C3．A4．C5．D6．原题第2行应为c=(c-=a-5),(a=b,b+3);答案为B否则输出结果为5,0,57．D8．C9．A10．B二、填空题1．-50300、a=-50,b=300a=-50b=3002．102030、10,20,30、a=10,b=20,c=303．15、0、0三、写出下列程序的运行结果1．a=7

4、89.654321,a=789.65,a=789.65432100,a=789.6543212．b=15,b=17,b=f3．c=1,x=0,y=0,z=14．2120,205．在TC环境下为216,125在VC环境下为216,1806．a=A,b=d,c=F7．9,4,12,128．x=4.500000,y=4,x+y=8.500000四、编程题1．#includevoidmain(){printf("**********************************");printf("HAPPYNEWYEAR!");pr

5、intf("**********************************");}2．(1)#includevoidmain(){inta=5,b=8,c=10,m,max;m=a>b?a:b;max=c>m?c:m;printf(“max=%d”,max);}(2)#includevoidmain(){inta,b,c,m,max;scanf("%d,%d,%d",&a,&b,&c);max=a>b?a:(b>c?b:c);printf(“max=%d”,max);}习题四一、选择题1．D2．D3．

6、C4．A5．D6．A7．C8．C9．D10．B二、填空题1．6、5、52．(a%3==0

7、

8、a%7==0)3．(1)a>b(2)a=c;(3)a,b,c三、写出下列程序的运行结果1．42．643．a=7,b=44．46465．*#46四、编程题1．另见填空题3#includevoidmain(){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,%

9、.2f”,a,b,c);}2．#includevoidmain(){inta,b;scanf("%d,%d",&a,&b);if(a%b==0)printf(“%disdivisibleby%d”,a,b);elseprintf(“%disnotdivisibleby%d”,a,b);}3．(1)#includevoidmain(){intx,y;scanf(“%d”,&x);if(x>-5&&x<0)y=x;printf("y=%d",y);elseif(x==0)y=x-1;printf("y=%d

10、",y);elseif(x>0&&x<10)y=x+1;printf("y=