计算机二级程序基础CMicrosoft+Word+文档.doc

01#include void main()int a,b,c,s;a=8;b=12,c=6;s=a+b*c;printf(s=%dn,s);02auto break case char continue default dodouble else enum extern float for goto ifint long register return short signed sizeof staticstruct switch typedef union unsigned void volatile while03#include void main()int x,y,z,w;unsigned int k;x=10;y=-20;k=30;z=x+k;w=y+k;printf(x+k=%d,y+k=%dn,z,w);04#include void main()char c1,c2;c1=a;c2=b;c1=c1-32;c2=c2-32;printf(%c,%cn,c1,c2);05#include void main()int x=1,y=2;int x=2;int x=3;printf(x=%d,y=%dn,x,y);printf(x=%d,y=%dn,x,y);printf(x=%d,y=%dn,x,y);06#include void main()int i=97; char ch=a; putchar(i); putchar(n); putchar(ch); putchar(n);07#include void main()int ch; ch=getchar(); putchar(ch); putchar(n);08#include void main()float r,l,s; scanf(%f,&r); l=2*3.14159*r; s=3.14159*r*r; printf(nl=%8.4f,l); printf(ns=%8.4fn,s);09#include void main()float r;scanf(%f,&r);printf(nl=%8.4f,2*3.14159*r);printf(ns=%8.4fn,3.14159*r*r);10#include void main()char ch1,ch2,ch3;ch1=getchar();ch2=getchar();ch3=getchar();putchar(ch3);putchar(n);putchar(ch2);putchar(n);putchar(ch1);putchar(n);11#include void main()char ch1,ch2,ch3;scanf(%c%c%c,&ch1,&ch2,&ch3);printf(%c,%dn,ch3,ch3);printf(%c,%dn,ch2,ch2);printf(%c,%dn,ch1,ch1);12#include void main()int num1,num2,num3;float average;printf(Please input thren numbers:n);scanf(%d,%d,%d,&num1,&num2,&num3);average=(num1+num2+num3)/3.0;printf(average=%7.2fn,average);13#include #include void main()float a,b,c,disc,x1,x2;printf(Please input a,b,c:n);scanf(%f,%f,%f,&a,&b,&c);disc=b*b-4*a*c;if(disc0)|(disc=0)x1=(-b+sqrt(disc)/(2*a);x2=(-b-sqrt(disc)/(2*a);printf(nx1=%6.2fnx2=%6.2fn,x1,x2);elseprintf(This is wrong!n);14#include #include void main()char a; printf(Please input a lowercase letter:n);a=getchar();a=a-32;printf(%cn,a);15#include void main()int a1=1,a2=0,a3=2;printf(%dn,%dn,%dn,a1,a1+a2+a3,a3-a1);16#include #include void main()double x;scanf(%lf,&x);if(x=0)printf(%10.6lfn,sqrt(x);elseprintf(That is wrong!n);17#include #include void main()double x;scanf(%lf,&x);if(x=0)printf(%10.6fn,sqrt(x);elseprintf(Enter data error!n);18#include void main()float a,b;scanf(%f,%f,&a,&b);if(ab) printf(%fn,a);else printf(%fn,b);19#include #include main()double x,y;scanf(%lf,&x);if(x=-10)y=2*x;printf(%10.6fn,y);elseif(x=0)y=2+x;printf(%10.6fn,y);elseif(x=10)y=x-2;printf(%10.6fn,y);elsey=x/10;printf(%10.6fn,y);20#include main()double x,y;scanf(%lf,&x);if(x=-10)y=2*x;elseif(x=0)y=2+x;elseif(x=10)y=x-2;elsey=x/10;printf(%10.6fn,y);21#include void main()double x,y;printf(please input x:n);scanf(%lf,&x);if(x=0)if(x=-10)y=2*x;elsey=2+x;printf(%7.3lfn,y);elseif(x=10)y=x-2;elsey=x/10;printf(%7.3lfn,y);22#include void main()double x,y;printf(please input x:n);scanf(%lf,&x);if(x=0)if(x=-10)y=2*x;elsey=2+x;elseif(x=10)y=x-2;elsey=x/10;printf(%7.3lfn,y);23#include void main()double x,y;printf(please input x:n);scanf(%lf,&x);if(x=0)if(x=-10)y=2*x;elsey=2+x;elseif(x=10)y=x-2;elsey=x/10;printf(%7.3lfn,y);24#include void main()int tall;char sex;printf(input sex and tall:n);scanf(%c %d,&sex,&tall);if(sex=F)if(tall=150)printf(An);else printf(Bn);else if(tall=170)printf(An);else printf(Bn);25#include void main()int i;printf(Please input i:n);scanf(%d,&i);switch(i)case 1:printf(An); case 2:printf(Bn); case 3:printf(Cn); case 4:printf(Dn); default:printf(En);26#include void main()int i;printf(Please input i:n);scanf(%d,&i);switch(i)case 1:printf(An);break; case 2:printf(Bn);break; case 3:printf(Cn);break; case 4:printf(Dn);break; default:printf(En);27#include void main()int i;printf(Please input i:n);scanf(%d,&i);switch(i)case 1: case 2: case 3:printf(ABCn);break; case 4:printf(Dn);break; default:printf(En);28#include void main()int i;printf(Please input i:n);scanf(%d,&i);switch(i)case 1:printf(An); case 2:printf(Bn); case 3:printf(Cn);break; case 4:printf(Dn);break; default:printf(En);29#include void main()int score;scanf(%d,&score);switch(score/10)case 10:case 9:printf(%d:An,score);break;case 8:case 7:printf(%d:Bn,score);break;case 6:printf(%d:Cn,score);break;default:printf(%d:Dn,score);30#include #include void main()int score;scanf(%d,&score);switch(score/10)case 10:case 9:printf(%d:An,score);break;case 8:case 7:printf(%d:Bn,score);break;case 6:printf(%d:Cn,score);break;default:printf(%d:Dn,score);31#include #include void main()float a,b,c,x1,x2,disc;printf(input a,b,c:n);scanf(%f %f %f,&a,&b,&c);if(fabs(a1e-6)printf(The equation is not a quadraticn);elsedisc=b*b-4*a*c;if(disc0)printf(The equation has not real rootn);elseif(fabs(disc)1e-6)printf(The equation has two equal roots:%8.4fn,-b/(2*a);elsex1=(-b+sqrt(disc)/(2*a); x2=(-b-sqrt(disc)/(2*a); printf(The equation has distinct real roots:%8.4f,%8.4fn,x1,x2);32#include void main()unsigned int year,leap;printf(Enter year:n);scanf(%d,&year);if(year%400=0)leap=1;elseif(year%4=0&year%100!=0)leap=1;else leap=0;if(leap=1)printf(%d:is a leap year.n,year);else printf(%d is not a leap year.n,year);33#include void main()int a,b;char c;scanf(%d%c%d,&a,&c,&b);switch(c)case+:printf(a+b=%dn,a+b);break; case-:printf(a-b=%dn,a-b);break; case*:printf(a*b=%dn,a*b);break; case/:if(b!=0) printf(a/b=%dn,a/b);else printf(b=0n);break; case%:if(b!=0) printf(a mod b=%dn,a%b);else printf(b=0n);break; default:printf(Data out of rangen);34#include void main()int a=25,b=14,c=19;if(a=25&b=2&c)printf(*a+b=%d,a-b=%d*n,a-b,a+b);else printf(*a=%d,b=%d,c=%d*n,a,b,c);35#include void main()int i=1,j;switch(i)case 1:for(j=0;j9;j+)i+=j;break; case 2:for(j=1;j10;j+)i+=j;break; case 3:i+;printf(%dn,i);36#include void main()int a,b,x,y;scanf(%d%dn,&a,&b);if(ab)printf(*y=%dn,y);else printf(*x=%dn,x);36#include void main()int a,t,m;scanf(%d,&a);t=a/10;switch(t)case 0: case 1: case 2:printf(m=1n);break; case 3:printf(m=2n);break; case 4:printf(m=3n);break; case 5:printf(m=4n);break; default:printf(m=5n);37#include void main()int x,y;scanf(%d,&x);if(-5x&x0)y=x-1;elseif(0x&x8)y=x+1;elseif(x=0)y=x;printf(%dn,y);38#include void main()int s=0,i;for(i=1;i=100;i+)s=s+i;printf(s=%dn,s);39#include void main()int i,n;long fac;scanf(%d,&n);fac=1;for(i=1;i=n;i+)fac=fac*i;printf(%d!=%dn,n,fac);40#include void main()int i,j;for(i=1,j=10;i=j;i+,j-)printf(i=d%,J=%dn,i,j); 41#include #include void main()char ch;for(;)ch=getch();if(ch=27)break;if(ch=13)continue;putch(ch);getch();42#include void main()int i,j,N=5;for(i=1;i=N;i+)for(j=1;j=N;j+)putchar(*);putchar(n);43#include void main()int i,j,N=5;for(i=1;i=N;i+)for(j=i;j=N;j+)putchar(*);putchar(n);44#include void main()int i,j,N=5;for(i=1;i=N;i+)for(j=1;j=i;j+)putchar(*);putchar(n);45#include void main()int score;scanf(%d,&score);while(score=0)switch (score/10)case 10:case 9:printf(%d:An,score);break;case 8:case 7:printf(%d:Bn,score);break;case 6:printf(%d:Cn,score);break;default:printf(%d:Dn,score);scanf(%d,&score);46#include #include void main()double a,b;scanf(%lf,&a);b=sin(a);printf(%6.4lfn,b);47#include #include void main()float x,y;int n;float power(float x,int n);scanf(%f,%d,&x,&n);y=power(x,n);printf(%8.2fn,y);float power(float x,int n)int i;float t=1;for(i=1;i=n;i+)t=t*x;return t;48#include long fac(int k)long f=1;int i;for(i=1;i+k;i+)f=f*i;return f;long comb(int n,int m)long c;c=fac(m)/(fac(n)*fac(m-n);return c;void main()int n,m;long c;scanf(%d,%d,&n,&m);c=comb(n,m);printf(%ldn,c);49#include void main()int a,b,m;int max(int,int);scanf(%d,%d,&a,&b);m=max(a,b);printf(max=%dn,m);int max(int x,int y)int t;if(xy)t=x;else t=y;return t;50#include int divisor(int a,int b)int r;dor=a%b; a=b; b=r;while(r!=0);return a;void main()int a,b,d;scanf(%d,%d,&a,&b);if(ab)d=divisor(a,b);elsed=divisor(b,a);printf(a=%d,b=%dn,a,b);printf(d=%dn,d);51auto ：声明自动变量 short ：声明短整型变量或函数 int： 声明整型变量或函数long ：声明长整型变量或函数 float：声明浮点型变量或函数 double ：声明双精度变量或函数 char ：声明字符型变量或函数 struct：声明结构体变量或函数 union：声明共用数据类型 enum ：声明枚举类型 typedef：用以给数据类型取别名 const ：声明只读变量 unsigned：声明无符号类型变量或函数 signed：声明有符号类型变量或函数 extern：声明变量是在其他文件正声明 register：声明寄存器变量 static ：声明静态变量 volatile：说明变量在程序执行中可被隐含地改变 void ：声明函数无返回值或无参数，声明无类型指针 if:条件语句 else ：条件语句否定分支（与 if 连用） switch :用于开关语句 ca