C语言程序设计（巨春飞）课后习题答案 北邮.docx

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1、第一章同步训练一、选择题CCDC二、编程题1 .【参考答案】#inc1ude/标准输入/输出函数的头文件intmai()/主函数(PrintfC时间抓住了是黄金，抓不住是流水！);/在屏幕上显示一句话return0;退出程序)C:UsersPCDesktop项目1.exe时间抓住了是黄金，抓不住是流水!Processexitedafter0.03958secondswithreturnva1ue0请按任意键继续.2 .【参考答案】#inc1udemai()(inta,b1sum;a=123;b=100;sum=a+b;pritf(sumis%dn,sum);)in.cpp#inc1udemax

2、n()甲sur)j)；C:UsersPCDesktop项目1.exesumis2233rocesexitedafter0.02977secondsWithreturnva1ue0青按任意键继续.-3 .【参考答案】#inc1udeintmain()printf(*n);printf(VeryGood!n);pritf(,*n);return0;)I,C:UsersPCDesktopJ51H1.exeVeryGood!Processexitedafter0.03047secondsWithreturnva1ue0倩按任意键继续.4 .【参考答案】正确程序代码：#inc1udeintmai()(i

3、ta=6;intb=8,c;c=a*b;pritf(%d,c);return0;)Iu:user.exe48Processexitedafter0.02586secondswithreturnva1ue0请按任意键继续.5.【参考答案】正确程序代码：#inc1udeintmai()(charc;getchar();pritf(%c,c);)jUUI51dUBvXU.CACProcessexitedafter1.779secondswithreturnva1ue0请按任意键继续,-、选择题ACABCBBCADDDCCBABCAC二、编程题1 .a,b2 .【参考答案】#inc1udeintmai

4、()(inti,j;printf(*n);printf(*n);printf(*n);printf(*);returnO;)SC:UsersPCDocijmentsdengyaosanjiaoxing.exe*J：ToCeSSexitedafterO.3261secondswithreturnva1ueO府按任意键继续.3 .【参考答案】调试程序：#inc1udemain()(inta=6,b=8,c;c=a*b;printf(%d,c);)运行结果：484 .【参考答案】#inc1udemai()chara,b;Printf(”输入第一个字符:);a=getchar();Printf(”用p

5、utchar函数输出为:);putchar(a);printf(n);Printf(”输入第二个字符:);scanf(%cb);printf(%c,b);)运行结果：IC:UsersPCDesktop项目IeXe输入第一个钮处角PUtChar喔激输出为：a输入第二手字符：bProcessexitedafter3.993secondswithreturnva1ue0请按任意键继续.5 .【参考答案】#inc1udeintmai()(inta,b,c,max;Printf(“请输入三位数字：n);scanf(%d%d%d,&a,&b,&c);if(ab)max=a;e1seif(bc)max=b;

6、e1semax=c;pritf(3个整数中的最大数是：%d1ma);return0;)运行结果：C:UsersPCDesktop项目1.exe请输入三位数字:234533个整数中的最大数是：45Processexitedafter5.634secondswithreturnva1ue0括按任意键继续第三章同步训练-、选择题BCCBDDCDDBAABBCBCC二、编程题1 .【参考答案】#inc1udeintmain()(charch;whi1e(scanf(%cch)=1)(jf(ch=$)(PUtCharCn);换行输出，力求区分输入数据return1;)e1se(putchar(ch);)

7、return0;)SjC:UsersPCDocumentszifuchuang.exeVdiajkfgj$VdiajkfgjProcessexitedafter32.88secondswithreturnva1ue1请按任意键继续.2 .【参考答案】#inc1udeintmai()(inti,n;doub1esum=1;scanf(%dn);for(i=1;i=n;i+)sum=sum*i;printf(%d!=%1f,n,sum);pritf(n);return0;)83GUsersPCDocumentsqiujiecheng.exe8!=40320.000000Processexiteda

8、fter4.677secondswithreturnva1ue0请按任意键继续.3.【参考答案】#inc1udevoidfun(intn)(switch(10)(case 1:case 2:case 3:case 4:case5:Printf(成绩不及格n);break;case6:Printf(成绩为D等n);break;case7:Printf(成绩为C等n)break;case8:Printf(成绩为B等rY)break;case9:case10:Printf(成绩为A等n);break;)main()(intn;scanf(%dn);fun(n);)1 B3C:UsersPCDocum

9、entsqiujiecheng.exe78版绩为C等Processexitedafter3.457secondswithreturnva1ue0请按任意键继续.4.【参考答案】#inc1udemain()(intyear,t,i;for(i=0j2J+)(scant(%d,&year);t二yeart12;switch(t)case0:Printf(猴);break;case 1:printf()reak;case 2:printf(?6);break;case 3:printf(5)break;case 4:printf(R,)reak;case 5:Printf(,牛”);break;ca

10、se 6:printf()jbreak;case 7:printf(,)jbreak;case 8:printf()jbreak;case 9:printf(,Jt):break;case 10:printf(,)break;case 11:printf(,)jbreak;BreturnO;9655AProcessexitedafterS.553secondsWithreturnva1ue0括按任意键继续.5.【参考答案】#inc1udeitfact(int)(if(n=0)return1;return*fact(-1);)intmai(void)(pritf(1!=%d,fact(1);pr

11、intf(3!=%dn,1fact(3);printf(5!=%dn,1fact(5);pritf(7!=%dtfact(7);printf(9!=%d1fact(9);pritf(11!=%dn,fact(11);pritf(13!=%dn1fact(13);returnO;：C:UsersPCDocumentsjishuxiangjiecheng.exer二7!=120!=50409!=36288011!=3991680013!=1932053504Processexitedafter0.5617secondswithreturnva1ue0请按任意键继续.第四章同步训练-、选择题BCCC

12、BCCBBCBCCDCDDDCD(D项改成s0)二、编程题1. 232.*3. 【参考答案】#inc1udeintmain()(inta11=11,131,6,48,34,30,7,35,60,18);intij,k,p,t,x;for(i=0;i10;i+)(P=i；forO=i+1;j10;j+)if(aQap)P=j；if(p!=i)t=ai;ai=ap;aP1=tpritf(%5d,ai);)printf(n);PrintfC请输入一个数”)；scanf(%d,&x);for(i=0;i10;i+)if(x=i;k-)ak+1=ak;break;ai=x;for(i=0;i=10;i+)printf(%5d,ai);printf(n);)6711183034354860131请输入一个数25671118253034354860131Processexitedafter3.03secondswithreturnva1ue0请按任意键继续.4.【参考答案】#inc1udeintmain()(inta