c++指针学习笔记--交换两个字符串数据
交换两个字符串数据。一：字符指针
<div class="highlighter">交换两个字符串数据。一：字符指针 3. int main() 4. { 5. void charsort2(char ** ,char **); 6. char * s1="abc"; 7. char * s2="baihe"; 8. charsort2 (&s1,&s2); 9. cout<<s1<<endl;10. cout<<s2<<endl; 11. return 0; 12. }13. void charsort2(char **s1,char **s2)14. {15. char *p;16. p=*s1;17. *s1=*s2;18. *s2=p;19. }二：字符数组21. int main()22. {23. void charsort( char * ,char * );24. char s1="abc";25. char s2="baihe"; 26. charsort(s1,s2);27. cout<<s1<<endl;28. cout<<s2<<endl; 29. return 0; 30. }31. void charsort(char *s1,char *s2)32. {33. char p;34. strcpy(p,s1);35. strcpy(s1,s2);36. strcpy(s2,p); 37. }三：字符串39. int main()40. {41. void strsort(string *,string *);42. string s1="abc";43. string s2="baihe"; 44. strsort(&s1,&s2);45. cout<<s1<<endl;46. cout<<s2<<endl; 47. return 0; 48. }49. void strsort(string *s1,string *s2)50. {51. string p;52. p=*s1;53. *s1=*s2;54. *s2=p;55. }四：引用57. int main()58. {59. void strsort(string &,string &);60. string s1="abc";61. string s2="baihe"; 62. strsort(s1,s2);63. cout<<s1<<endl;64. cout<<s2<<endl; 65. return 0; 66. }67. void strsort(string & s1,string &s2)68. {69. string p;70. p=s1;71. s1=s2;72. s2=p;73. }多谢论坛上朋友的分享.以下为新添方法:五:指针引用:76. int main()77. {78. void charsort2(char*& ,char*&);79. char * s1="abc";80. char * s2="baihe"; 81. charsort2 (s1,s2);82. cout<<s1<<endl;83. cout<<s2<<endl; 84. return 0; 85. }86. void charsort2(char *&s1,char *&s2)87. {88. char *p;89. p=s1;90. s1=s2;91. s2=p;92. }
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