C语言程序设计实验与习题指导同步自测答案

1、scanf&x);if(x0) y=3*x+l;else if(xb)t=a;a=b;b=t;if(ac)t=a;a=c;c=t;辻(ad)t=a;a=d;d=t;if(bc)t=b;b=c;c=t;if (bd)t=b;b=d;d二t;if (cd)t=c;c=d;d=t;printf C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、选择题二. 填空题1- getchar ()2.n+3.nnum+；4. n=mtotal=total+sum5. (i/100) *(i/100)*(i/100)+(i/10) %10) * (i/10) %10

2、) * (i/10)%10) + (i%10) * (i%10) * (i%10)沪二i6. 107.i%j=08. b9.y二 1x%i=010.2*x+4*y二二90三. 读程序写结果题1. 8, 172.57233.4四. 编程题1.main ()int x, y, a, b;for (x=100;x1000;x+)y=0；a二 x;while (a) y=y*10+a%10;a=a/10;if(x+y二二1333)print (/a=%d;b=%d;c=%dn/, x/100, (x/10)%10, x%10);2.main ()long x, y/* 存放 x */, n/* 记录

3、x 的位数 */, s/* 存放 x*x */;long z /*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=l;xO;n-)z+二(s%10)*t;/*取相应部位数字*/t*二10;s=s/10;if (x=z) printf(%-101d,x);3.main ()int i;for(i=l;i=100;i+)if (i+3) %5=0& (i-3) %6=0)printfi);break;4.main ()int x, a, b, c;for(x=100;x1000;x+)a=x/100;b= (x/10)%10;c=x%10;辻(a*a*a+b*b*b+

4、c*c*c二二1099)printfx);5.main ()int x, a, b, c, count二0;for(x=100;x1000;x+)a=x/100;b= (x/10)%10;c=x%10;if (a+b+c二二5)count+;printf (，z共有%d个其各位数字之和是5的数字,count);2. 6.3同步自测一、选择题二、填空题1 fac(n-l)2. a*a%8!=l3.a%b4.i+5j!二0 或 j 鈕10+ 06 X二a &x二z7. x二nn%106.三、读程序写结果题1.9, 192. f 二65.309.432110.711.212.13.5,2516.j=

5、217.15, 14518. 67. 10, 20, 308.!EDCBA14.1,7,315.1234561 A 7 QQQ四、编程题1.ttinclude void delspace(char *s) int i, j;for(i=0, j=0;si! = , 0 ;i+)if(si! = ,)sj二 si ; j+sj二0;void main () char *str;printf ( u input string：v ;gets (str);delspace(str);2.ttinclude ttinclude void main () int adddigit (int num):i

6、nt n;scanf ( u%d n , &n);printf (s , str);3.ttinclude ttinclude void main ()int isprime(int x);int a;printf( please input the number:nM ;scanf ( d”，&a);if(isprime(a)printf ( the %d is a primenn , a);elseprintf ( the %d is not a primen , a):int isprime(int x) int j;or(j=2;j=sqrt(x);j+)if(x%j=0) retur

7、n 0;return 1;2.1.3同步自测一、选择题二-填空题1. k=p4. continue5 j=3 aj-lk-l2 aijmin3 i+j=24. xbcdBCDftinclude 6 x/10 或 int (x/10)8 aLn-i-1二temp三、读程序写结果题1. max二 10, row=2, colum=l 3. countryside四.编程题1.参考程序及评分标准一: ttincludeO ftdefine N 5viod main () int aN+l, x, i, k;for(i=0;iN;i+)scanf (%d，&ai);scanf&x);nclude vo

8、id main ()void copystr(char *pl,char *p2, int m);char str120, str220;scanf ( %s” , strl);scanf (, &m);if (strlen (strl) m)printf( input errorM ); else copystr (strl, str2, m);printf( the result is2ttincludeOttincludeOvoid main() void reverse(char s);char si 80;gets (si);reverse (si);puts (si);void copystr (char *pl,char