C语言上机练习题.pdf

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1、;.printf("Thenew1.输入一个不超过五位的正整数，numberis:%d%d%d",gw,sw,bw);输出其逆数。例如输入12345，}输出应为54321。else#include"stdio.h"if(n>=10&&n<=99)main(){{sw=n/10;longn;gw=n%10;intww,qw,bw,sw,gw;printf("Theoldprintf("Pleaseinput:");numberis:%ld",n);scanf("%ld",&n);printf("Thenewwhile(n<=0

2、

3、n>99999)numb

4、eris:%d%d",gw,sw);{}printf("Theelseprintf("Theoldnumberistoolittleortoonumberequalsthenewlarge.Retryplease!");number:%ld",n);scanf("%ld",&n);}}if(n>=10000&&n<=99999)2.计算1+2+3⋯+n的值，n是从键{盘输入的自然数。ww=n/10000;/*Note:YourchoiceisCIDE*/qw=n/1000%10;#include"stdio.h"bw=n/100%10;main()sw

5、=n/10%10;{gw=n%10;intn,i;printf("Theoldnumberlongsum=0;is:%ld",n);printf("1+2+3+....+n");printf("Thenewnumberprintf("Pleaseinputn:");is:%d%d%d%d%d",gw,sw,bw,qw,wwscanf("%d",&n););for(i=1;i<=n;i++)}{elseif(n>=1000&&n<=9999)sum+=i;{}qw=n/1000;printf("sum=%ld",sum);bw=n/100%10;}s

6、w=n/10%10;3.从终端（键盘）读入20个数据gw=n%10;到数组中，统计其中正数的个printf("Theold数，并计算这些正数之和。、numberis:%ld",n);/*Note:YourchoiceisCIDE*/printf("Thenew#include"stdio.h"number#defineN20is:%d%d%d%d",gw,sw,bw,qw);main(){}inta[N],i,sum=0,count=0;elseif(n>=100&&n<=999)printf("Pleaseinput{numbers:");bw=n/

7、100;for(i=0;i0)printf("Theold{sum+=a[i];numberis:%ld",n);count++;;.';.}平方根s，n从键盘输入。例如}若n为1000时，函数值应为：printf("count=%d,sum=%d",cos=153.909064。unt,sum);/*Note:YourchoiceisCIDE*/}#include"stdio.h"4.从终端（键盘）将5个整数输入#include"math.h"到数组a中

8、，然后将a逆序复制main()到数组b中，并输出b中各元素{intn,s,i;的值。floatsum=0;/*Note:YourchoiceisCIDE*/printf("Pleaseinputn:");#include"stdio.h"scanf("%d",&n);#defineN5while(n<=0)main(){{inta[N],b[N],i;printf("Errorprintf("Pleaseinputinput.Retryplease:");numbers:");scanf("%d",&n);for(i=0;i

9、nf("%d",&a[i]);for(i=1;i

10、rintf