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  1. #include <iostream>
  2. #include <string.h>
  3. using namespace std;
  4. #define MAX 300
  5.  
  6. int myStrcmp(char s1[], char s2[]);
  7. int myStrlen(char s[], int k);
  8. void myStrcpy(char s[], int vt, char s1[], int k);
  9. void mySubstr(char s[], int b, int count, char ss[]);
  10. bool myStrcat(char s1[], char s2[]);
  11. void StringReverse(char st[]);
  12.  
  13. int main()
  14. {
  15. 	char s[MAX];
  16. 	fgets(s,300,stdin);
  17. 	if (myStrcmp(s, "") == 0)
  18. 		cout << "Chuoi rong." << endl;
  19. 	else
  20. 	{
  21. 		StringReverse(s);
  22. 		cout << s << endl;
  23. 	}
  24. 	return 0;
  25. }
  26. int myStrlen1(char s[]) {
  27.     int length = 0;
  28.     while (s[length] != '\0') {
  29.         ++length;
  30.     }
  31.     return length;
  32. }
  33.  
  34. int myStrcmp(char s1[], char s2[]) {
  35.     int m = myStrlen1(s1);
  36.     int n = myStrlen1(s2);
  37.     for (int i = 0; i < min(m, n); ++i) {
  38.         if (s1[i] > s2[i]) {
  39.             return 1;
  40.         }
  41.         else if (s1[i] < s2[i]) {
  42.             return -1;
  43.         }
  44.     }
  45.     if (m > n) return 1;
  46.     else if(m < n) return -1;
  47.     else return 0;
  48. }
  49.  
  50. void myStrcpy1(char s[], char s1[]) {
  51.     int i = 0;
  52.     while (s1[i] != '\0') {
  53.         s[i] = s1[i];
  54.         ++i;
  55.     }
  56.     s[i] = '\0';
  57. }
  58.  
  59. void myStrcat1(char s1[], char s2[]) {
  60.     int i = 0;
  61.     while (s1[i] != '\0') {
  62.         ++i;
  63.     }
  64.     int j = 0;
  65.     while (s2[j] != '\0') {
  66.         s1[i] = s2[j];
  67.         ++i;
  68.         ++j;
  69.     }
  70.     s1[i] = '\0';
  71. }
  72.  
  73. void StringReverse(char s[]) {
  74.     s[myStrlen1(s) - 1] = '\0'; // Bỏ ký tự xuống dòng cuối cùng
  75.     if (myStrcmp(s, "") == 0) {
  76.         cout << "Chuoi rong." << endl;
  77.         return;
  78.     }
  79.     char a[100][100];
  80.     int n = 0;
  81.     char* token = strtok(s, " ");
  82.     while (token != NULL) {
  83.         myStrcpy1(a[n], token);
  84.         ++n;
  85.         token = strtok(NULL, " ");
  86.     }
  87.     for (int i = 0; i < n; ++i) {
  88.         int len = myStrlen1(a[i]);
  89.         for (int j = 0; j < len / 2; ++j) {
  90.             char temp = a[i][j];
  91.             a[i][j] = a[i][len - j - 1];
  92.             a[i][len - j - 1] = temp;
  93.         }
  94.     }
  95.     myStrcpy1(s, a[0]);
  96.     for (int i = 1; i < n; ++i) {
  97.         myStrcat1(s, " ");
  98.         myStrcat1(s, a[i]);
  99.     }
  100. }
Success #stdin #stdout 0s 5288KB
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�V�x
https://ideone.com/HrAGsS
language:
C++ (gcc 8.3)
created:
9 days ago
visibility:
public

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