C语言二级教程(2015年版)课后部分编程题.doc

课后编程题（C语言二级教程2013版）3.17#include void main()int hour,minute;hour=560/60;minute=560%60;printf(hour=%d, minute=%dna, hour, minute);3.19#include void main()double a,b,c,average;printf(Please input double a,b,c:);scanf(%lf%lf%lf, &a, &b, &c);average=(a+b+c)/3.0;printf(average=%.1fn, average);3.18#include void main()int a,b,residue;float quotient;printf(Please input integer a and b:);scanf(%d%d, &a, &b);residue=a%b;quotient=(float)a/b;printf(residue=a%b=%d, quotient=a/b=%8.3fn, residue, quotient);3.20#include void main()int a,b,c,temp;printf(Please input integer a,b,c:);scanf(%d%d%d, &a, &b, &c);temp=a;a=c;c=b;b=temp;printf(a=%d b=%d c=%dn, a, b, c);4.22(P49)#include void main()int y1,y0,m1,m0,d1,d0;/y0,m0,d0表示学生的生日日期int age; /y1,m1,d1表示当前输入的日期printf(Please input birthday(y0,m0,d0) and date(y1,m1,d1):n);scanf(%d%d%d%d%d%d,&y0,&m0,&d0,&y1,&m1,&d1);age=y1-y0;if(m1m0 | m1=m0 & d1d0)age-;printf(Your age is :%dn,age);4.23#include void main()int i;printf(Please input a integer:);scanf(%d,&i);if(i%2 = 0)printf(%d is a even number.n,i);elseprintf(%d is a odd number.n,i);4.24#include void main()double a, b, c, max;printf(Please input a, b, c:);scanf(%lf%lf%lf,&a, &b, &c);if(ab)if(ac)max=a;elsemax=c;elseif(bc)max=b;elsemax=c;printf(the max is %lfna,max);5.17:编写程序，求1-3+5-7+.-99+101的值。#include void main()int s=1,i=1;while(2*i+1) = 101)if(i%2 = 0)s += 2*i+1;else s -= 2*i+1;i+;printf(s=1-3+5-7+.-99+101=%dn,s);5.18(1）#include void main()int i;float n=1,e=1;for(i=1;i=50;i+)n *= i;e += 1/n;printf(e=%fn,e);（2）#include void main() int i=1; float n=1,e=1; while(1/n10e-4) n *= i; e += 1/n; i+; printf(e=%fn,e);5.19判断闰年#include void main() int i, j=0;for(i = 2000; i = 3000; i += 4) if(i % 4 = 0 )& (i % 100 != 0 )| i % 400 = 0) printf(%d,i); j+; if(j % 10 = 0)printf(n); 5.20用*打印一个菱形#include void main ()int i,j,k;for(i=0; i = 4; i+)for(k=0; k4-i; k+) printf( );for(j=0; j2*i-1; j+) printf(*);printf(n);for(i=1 ;i4; i+)for(k=1; k=i; k+) printf( );for(j=0;j7-i*2; j+) printf(*);printf(n);6.19#include void main()char ch;int n=0;while(ch=getchar() != n)if(n%3 = 0)putchar(n);n+;printf(%4c:%4d,ch,ch);printf(n);6.20#include void main()char ch;int n=0;while(ch=getchar() != n)if(ch = 0 & ch = 9)putchar(ch);printf(n);6.21#include void main()char ch;int n=0;while(ch=getchar() != !)if(ch = n)n+;printf(The line number:%dn,n);6.23#include void main()char ch;int L,n=0;printf(Please input line number:);scanf(%d,&L);for(int i=1; i =i; k-)putchar( );for(int j=1; j = n; j+)putchar(ch);putchar(