C语言程序设计实验与习题指导同步自测答案

1、C语言程序设计实验与习题指导同步自测答案2.1.3同步自测一、选择题1.D2.C3.D4.C5.A6.B7.D8.C二、填空题1.cexe2.main3.函数说明部分函数体4.主或main主或main5.；2.2.3同步自测一、选择题1.B2.D3.C4.C5.C6.B7.D8.A9.C10.B11.D12.D13.D14.C15.C16.D17.C18.C19.B20.A21.D22.A23.D24.C25.D26.B27.B28.D29.D30.C31.A32.B33.D34.B35.C2.3.3同步自测一、选择题1.B2.C3.D4.A5.B6.A7.A8.A9.D10.B2.4.3同步

2、自测一、选择题1.B2.A3.B4.C5.B6.D7.C8.A9.D10.B二.编程题1.#include<stdio.h>voidmain()intx,y；printf("请输入自变量x的值：");scanf("%d",&x)；if(x<0)y=3*x+1;elseif(x<5)y=2*x;elsey=x+2;printf("n函数y的值为：d",y);2.#include<stdio.h>voidmain()inta,b,c,d,t;printf("请输入四个整数：n"

3、;);scanf("%d%d%d%d",&a,&b,&c,&d);if(a>b)t=a;a=b;b=t;if(a>c)t=a;a=c;c=t;if(a>d)t=a;a=d;d=t;if(b>c)t=b;b=c;c=t;if(b>d)t=b;b=d;d=t;if(c>d)t=c;c=d;d=t;printf("按新顺序输出的数为：%d%d%d%d",a,b,c,d);2.5.3同步自测一、选择题I .C2.C3.D4.D5.D6.C7.D8.B9.A10.BII .B12.B13.B14.

4、B15.C二、填空题1.getchar()2.n+3.'n'num+4 .n<=mtotal=total+sum5 .(i/100)*(i/100)*(i/100)+(i/10)%10)*(i/10)%10)*(i/10)%10)+(i%10)*(i%10)*(i%10)g=i6.107.i%j=08.b9.y=1x%i=010.2*x+4*y=90三.读程序写结果题1.8,172.57233.4四.编程题1.main()intx,y,a,b;for(x=100;x<1000;x+)y=0;a=x;while(a)y=y*10+a%10;a=a/10;if(x+y=

5、1333)printf("a=%d;b=%d;c=%dn",x/100,(x/10)%10,x%10);2.main()longx,y/*存放x*/,n/*记录x的位数*/,s/*存放x*x*/;longz/*存放被取的顺序从右到左的相应部位数字*/,t/*十进制的权*/;for(x=1;x<=100;x+)(y=x;n=0;z=0;t=1;while(y)(n+;/*记录x的位数*/y=y/10;s=x*x;for(;n>0;n-)(z+=(s%10)*t;/*取相应部位数字*/t*=10;s=s/10;if(x=z)printf("%-10ld&q

6、uot;,x);3.main()(inti;for(i=1;i<=100;i+)if(i+3)%5=0&&(i-3)%6=0)(printf("%d",i);break;4.main()(intx,a,b,c;for(x=100;x<1000;x+)(a=x/100;b=(x/10)%10;c=x%10;if(a*a*a+b*b*b+c*c*c=1099)printf("%-10d",x);)5.main()(intx,a,b,c,count=0;for(x=100;x<1000;x+)(a=x/100;b=(x/10)

7、%10;c=x%10;count+;)printf(")if(a+b+c=5)共有d个其各位数字之和是5的数字",count);一、选择题1.B2.C2.6.3同步自测3.D4.B5.A6.D7.D8.D9.D10.B11.B12.A13.D14.D15.B16.B17.A18.A19.B20.A21.A22.D二、填空题23.D24.A25.A1.fac(n-1)4 .i+2.5 .6 .x>='a'&&x<='三、读程序写结果题a*a%8!=1j!=0或j7.a3.x=n1.9,192.f=63.1a%bn%10+&#

8、39;0'n%104. 15. 307.10,20,306. -5,-12,-78. !EDCBA9. 432110.11.213.5,2512.17,7,717,8,1114.1,7,310,7,316.j=2S=101,7,410,7,415.12345633-22,5,1123,4566,7,417.15,14518.四、编程题1.#include<stdio.h>0'i+)voiddelspace(char*s)inti,j;for(i=0,j=0;si!=if(si!='')sj=si;j+)sj='0')voidmain(

9、)char*str;printf("inputstring:");gets(str);delspace(str);printf("%s',str);)3.#include<stdio.h>#include<math.h>voidmain()intisprime(intx);inta;printf("pleaseinputthenumber:n");scanf("%d,&a);if(isprime(a)printf("then",a);elseprintf("the%

10、disnotaprimen”,a);)intisprime(intx)intj;for(j=2;j<=sqrt(x);j+)if(x%j=0)return0;return1;)2.7.3同步自测一、选择题I .C2.A3.C4.A5.D6.C7.C8.D9.B10.BII .D12.C13.D14.D15.B二、填空题1.k=p2.aij<min3.i+j=24.continue5.j=3aj-1k-16.x/10或int(x/10)7.！(si>='0'&&si<='9')8.an-i-1=temp三、读程序写结果题1.

11、max=10,row=2,colum=12.18,103. countryside4.xbcdBCD四、编程题1 .参考程序及评分标准一：#include<stdio.h>2.#include<stdio.h>#include<math.h>voidmain() intadddigit(intnum);intn;scanf("%d,&n);printf("sum=%dn”,addigit(n);)intaddigit(intnum) ints=0;num=abs(num);dos+=num%10;num/=10;while(num

12、);returns;#defineN5viodmain()intaN+1,x,i,k;for(i=0;i<N;i+)scanf("%d”,&ai);scanf("%d",&x);/2for(i=0;ai<x&&i<N;i+);/3for(k=N;k>i;k-)ak=ak-1;ai=x;/3for(i=0;i<=N;i+)printf("%5d",ai);putchar('n');.参考程序及评分标准二：#include<stdio.h>#defineN5v

13、iodmain()voidinsert(intv,intn,intx);intaN+1,x,i;for(i=0;i<N;i+)scanf("%d",&ai);scanf("%d",&x);/2insert(a,N,x);2for(i=0;i<=N;i+)printf("%5d",ai);putchar('n');.voidinsert(intv,intn,intx)inti,k;for(i=0;vi<x&&i<n;i+);/2for(k=N;k>i;k-)v

14、k=vk-1;vi=x;23.#include<stdio.h>#include<string.h>voidmain()分分分/2分分分/2分分分voidcopystr(char*p1,char*p2,intm);charstr120,str220;scanf("%S'，str1);scanf("%d,&m);if(strlen(str1)<m)printf("inputerror");elsecopystr(str1,str2,m);printf("theresultis:%svoidcopystr(char*p1,char*p2,intm)intn=0;while(n<m-1)n+;p1+;while(*p1!='0')*p2=*p1;p1+;p2+;*p2='0'；"，str2);2.#include<stdio