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C++3

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电梯直达

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发表于 2007-1-11 09:26 |只看该作者 |倒序浏览

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三．写出下列程序的执行结果.
  1．#include<iostream.h>void SB(char ch){switch(ch){case  ‘A’：case ‘a’：cout<<”well!”；break；case  ’B’：case ‘b’：cout<<”good! ” ；break；case  ’C’：case ‘c’：cout<<“pass!”；break；default：cout<< “bad！”；break；}}void main () {char al = ‘c’，a2 = ‘A’,a3 = ‘f’ ；SB(a2)； SB(a1)；SB(‘B’)；SB(a3);cout << endl ；}  2. include< iostream.h>void main(){int s = 0；for(int i= l；i<8；i + + )s + =i*i；cout<< “s=”<< s<<endl；} 3. # include< iostream.h>void main() {int s = 0;for(int i= l；；i + + ) {if (s>40) break；if(i%4==0) s+ = i；}cout<<”i，s= “<<i<<‘,’<<s<<endl；} 4. # include< iostream.h>void main() {int n = 6，y = l；while(n--) { y + +； + +y ；}cout<<“y * y = ”<< y*y<<endl；} 5. #include < iostream.h>#include < string.h>void main() {char a[]=”erdgrgaabfdfe” ;int i1 = 0 , i2 = 0 , i3= 0 ,i=0;while( a ) {if( a ==’a’ ) i1++ ;else if( a ==’b’ ) i2++ ;else i3++ ;i++;}cout << i1 <<‘ ‘<< i2 <<’ ‘<<i3<<endl ;} 6. #include<iostream.h>       void main()       {   int x=5; switch(2*x-3) {       case 4: cout<<x<<’
: o' e( y& B f v ’;case 7: cout<<x+1<<’5 _0 F; G0 W; l! Q! E3 f
’;<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">             case 10: cout<<2*x-1<<<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Courier New"; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">’<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">
- W8 b7 ~$ |- f( g$ S P) k <span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: "Courier New"; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">’<span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-bidi-font-weight: bold; mso-hansi-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;">;