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  1. #include <iostream>
  2. #include <string.h>
  3. #define MAX 100
  4. using namespace std;
  5.  
  6. int myStrlen(char s[], int k){
  7.     k = 0;
  8.     while (s[k] != '\0')
  9.         k++;
  10.     return k;    //s[k] là \0
  11. }
  12. void ChuanHoa(char s[]){
  13.     int len;
  14.  
  15.     while (s[0]==' '){
  16.         len = myStrlen(s, len);
  17.         for (int i=0; i<len; i++)
  18.             s[i]=s[i+1];
  19.     }
  20.  
  21.     len = myStrlen(s, len);
  22.     while (s[len - 1] == ' '){
  23.         s[len - 1] = '\0';
  24.         len--;
  25.     }
  26.  
  27.     int vitri = 0;
  28.     bool thaotac;
  29.  
  30.     while (s[vitri] != '\0'){
  31.         thaotac = false;
  32.         if (s[vitri] == ' '){
  33.  
  34.  
  35.             if ((s[vitri + 1] == ' ') || (s[vitri + 1] == '.')){
  36.  
  37.  
  38.                 len = myStrlen(s, len);
  39.                 for (int i=vitri; i<len; i++)
  40.                     s[i]=s[i+1];
  41.                 thaotac = true;
  42.             }
  43.         }
  44.         else if (s[vitri] == '.'){
  45.             if (s[vitri + 1] != ' '){
  46.                 len = myStrlen(s, len);
  47.                 for (int i=len; i>vitri; i--)
  48.                     s[i+1] = s[i];
  49.  
  50.                 s[vitri+1] = ' ';
  51.  
  52.                 thaotac = true;
  53.             }
  54.         }
  55.  
  56.         if (thaotac == false)
  57.             vitri++;
  58.     }
  59. }
  60.  
  61. int main() {
  62. 	char s[MAX];
  63. 	cin.getline(s, MAX);
  64. 	ChuanHoa(s);
  65. 	cout<<s;
  66. 	return 0;
  67. }
Success #stdin #stdout 0.01s 5252KB
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    Nguyen     VAN     AN
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Nguyen VAN AN
https://ideone.com/ktJm3c
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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