C语言试题(上机运行).doc

C语言试题1、1!+2!+3!+n！#includestdio.hmain()int a=1,b=1,c=0,n;printf(请输入n的值:);scanf(%d,&n);for(a;a0.05)sum=sum+1/n;n=n+1;printf(%dn,n-1);printf(sum=%fn,sum);-3、1+12+13+14+15+1n#includestdio.hmain()int a=1,n;double fn=0.0;printf(请输入n的值:);scanf(%d,&n);for(a;a=n;a+)fn=fn+(double)1/(double)a;printf(1+1/2+1/3+1/%d=%fn,n,fn);-4、1+2+3+4+.+99+100a)for循环：#includestdio.hmain()int a,sum=0;for(a=1;a=100;a+)sum+=a;printf(sum=%dn,sum);b)while循环：#includestdio.hmain()int a=1,sum=0;while(a=100)sum=sum+a;a=a+1;printf(sum=%dn,sum);c)do.while循环#includestdio.hmain()int a=1,sum=0;dosum=sum+a;a=a+1;while(a=100);printf(sum=%dn,sum);-5、1+3+5+.+97+99#includestdio.hmain()int a,sum=0;for(a=1;a=100;a+)if(a%2!=0)sum+=a;printf(sum=%dn,sum);-6、11+22+33+nn#includestdio.hmain()int n,b=1,c=0;printf(请输入n的值:);scanf(%d,&n);while(b=n)c=c+b*b;b+;printf(1*1+2*2+3*3+%d*%d=%dn,n,n,c);-7、a+aa+aaa+aaaaaaa(n个a)#includestdio.hmain()int a,n,m=0,t=0,s=0,y;printf(请输入a的值:);scanf(%d,&a);printf(请输入n的值:);scanf(%d,&n);y=a;while(m=90&a=80)printf(你的等级为Bn);else if(a=70)printf(你的等级为Cn);else if(a=60)printf(你的等级为Dn);else if(a=0)printf(你的等级为En);else printf(输入错误,请输入正确数字n);-9、比较两个数的大小（单次）#includestdio.hintmin(int a,int b)int c;c=ab?a:b;/* 如果ab成立，则输出“冒号”前面的a,不满足则输出b. */return(c);main()int m,n,x;printf(输入两个数:n);scanf(%d%d,&m,&n);x=min(m,n);printf(较小值是%dn,x);-10、比较两个数的大小（循环）#includestdio.hintmin(int a,int b)int c;c=ab?a:b;return(c);main()int m,n,x;char ch;do printf(输入两个数:n);scanf(%d%d,&m,&n);x=min(m,n);printf(较小值是%dn,x);getchar();printf(继续比较输入y,结束比较输入n:);scanf(%c,&ch);if(ch!=y)break;while(1);/*括号中的1代表 dowhile 语句永远循环直到 if 语句不满足条件*/-11、乘法口诀（三角形）a)for循环#includestdio.hmain()int a,b,c;for(a=1;a=9;a+)for(b=1;b=a;b+)printf(%d*%d=%dt,b,a,a*b);printf(n);b)数组#includestdio.hmain()int a99,m,n;for(m=0;m9;m+)for(n=0;n9;n+)amn=(m+1)*(n+1);for(m=0;m9;m+)for(n=0;n=n)printf(%d*%d=%dt,m+1,n+1,amn);printf(n);-12、从0开始输出n个偶数#includestdio.hmain()int a=0,b;printf(输入b:);scanf(%d,&b);while(b-)printf(%d ,a+*2);printf(n);-13、从2开始输出十个偶数(数组) #includestdio.hmain()int a;int b10;for(a=0;a=9;a+)ba=2*a+2;for(a=0;a=9;a+)printf(b%d=%dn,a,ba);-14、从50开始输出20个数（自动）#includestdio.hmain()int a20,b;for(b=0;b20;b+)ab=b+50;for(b=0;b20;b+)printf(%d,ab);printf(t);if(b+1)%5=0)printf(n);-15、第几行几个字符（三角形）a)for循环#includestdio.hmain()int i,j,n;char ch;printf(请输入一个字母和数字:n);scanf(%c%d,&ch,&n);for(i=1;i=n;i+)for(j=1;j=i;j+)putchar(ch);putchar(n);b)形参#includestdio.hvoid a(char ch,int n)int i,j;for(i=1;i=n;i+)for(j=1;j=i;j+)putchar(ch);putchar(n);main()int num;char x;printf(请输入一个字母和数字:n);scanf(%c%d,&x,&num);a(x,num);printf(n);-16、各位数立方和等于1099的三位数#includestdio.hmain()int a,b,c,d,e;int ge,shi,bai;for(a=100;a=999;a+)ge=a-a/10*10;shi=(a-a/100*100)/10;bai=a/100;c=ge*ge*ge;d=shi*shi*shi;e=bai*bai*bai;if(c+d+e=1099)b=bai*100+shi*10+ge;printf(三位数为：%dn,b);-17、将第二个字符串连接到第一个字符串后面，形成一个新的字符串#includestdio.hmain()char a80,b80;int m=0,n=0;printf(请输入第一个串字符:);scanf(%s,a);printf(请输入第二个串字符:);scanf(%s,b);while(am!=0)m+;doam+n=bn;n+;while(bn!=0);am+n=0;printf(新字符为:%sn,a);-18、将一个数插入到从小到大排列的数组后后重新排列#includestdio.hmain()int a8=2,6,13,23,45,65,78,x,i;printf(原数组为:);for(i=0;i7;i+)printf(%3d,ai);printf(n请输入一个数:);scanf(%d,&x);i=6;while(xai)ai+1=ai;i-;ai+1=x;printf(新数组为:);for(i=0;ib)d=a;a=b;b=d;if(ac)e=a;a=c;c=e;if(bc)f=b;b=c;c=f;printf(a=%f,b=%f,c=%fn,a,b,c);-21、十个数从小到大排列#includestdio.hmain()int i,j,t,s10;printf(please enter 10 integers:n);for(i=0;i10;i+)scanf(%d,&si);for(i=0;i9;i+)for(j=i+1;j10;j+)if(sjsi)t=si;si=sj;sj=t;for(i=0;i10;i+)printf(%4d,si);printf(n);-22、十名学生成绩的平均分 总分（while语句）#includestdio.hmain()float a,b=1,sum=0,average=0;printf(输入十名学生的成绩：);scanf(%f,&a);while(b10)sum+=a;b+=1;scanf(%f,&a);sum=sum+a;average=sum/10;printf(平均%f,average);printf(总分%f,sum);-23、输出三个数最大的数#include void main() int a,b,c,m;printf(请输入三个数：n);scanf(%d%d%d,&a,&b,&c);m=a;if(bm)m=b;if(cm)m=c;printf(最大的数是%dn,m);-24、输入十个数后反过来输出#includestdio.hmain()int a10,m,n;printf(请输入十个数字:n);for(m=0;m=0;m-)printf(%d,am);printf( );printf(n);-25、输入一个数,判断是不是闰年(能被4整除不能被100整除,或者能被400整除的是润年)#includestdio.hmain()int a,a1,a2,a3;printf(请输入年份n);scanf(%d,&a);a1=(a%4=0);a2=(a%100!=0);a3=(a%400=0);if (a1&a2|a3)printf(您输入的年份是闰年n); else printf(您输入的不是闰年n);-26、输入一个字符 当输入字符为#时结束#includestdio.hmain()char ch;printf(请输入一个字符:n);while(ch=getchar()!=#)printf(%cn,ch);printf(输入为#，结束输入！n);-27、数组的行与列交换后输出#includestdio.hmain()int old33,new33,j,k,n=0;printf(请输入九个数字:n);for(j=0;j3;j+)for(k=0;k3;k+)scanf(%d,&oldjk);n+;printf(原数组为:n);for(j=0;j3;j+)for(k=0;k3;k+)printf(%5d,oldjk);printf(n);for(j=0;j3;j+)for(k=0;k3;k+)newjk=oldkj;printf(新数组为:n);for(j=0;j3;j+)for(k=0;k3;k+)printf(%5d,newjk);printf(n);-28、统计从键盘上输入的字符个数a)#includestdio.hmain()int n=0;printf(请输入一行字符：n);while(getchar()!=n)n+;printf(%d个字符n,n);b)#includestdio.hmain()char a80;int n=0,j=0;p