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  1. #include <iostream>
  2. #include <cstring>
  3.  
  4. char* makeString(const char* srcStr, const char* subStr, char delim)
  5. {
  6.     size_t srcStrLength = std::strlen(srcStr);
  7.     size_t subStrLength = std::strlen(subStr);
  8.  
  9.     //тут типа создаем массив достаточной длины, хуемое,
  10.     //чтобы уместить строку, которая в худшем варианте
  11.     //будет полностью состоять из delim-символов
  12.     char* resultStr = new char[srcStrLength + srcStrLength * subStrLength + 1];
  13.  
  14.     size_t resultStrLength = 0;
  15.  
  16.     for(size_t i = 0; i < srcStrLength; i++)
  17.     {
  18.         resultStr[resultStrLength] = srcStr[i];
  19.         resultStrLength++;
  20.  
  21.         if(srcStr[i] == delim)
  22.         {
  23.             std::strcpy(resultStr + resultStrLength, subStr);
  24.             resultStrLength = resultStrLength + subStrLength;
  25.         }
  26.     }
  27.  
  28.     resultStr[resultStrLength] = '\0';
  29.  
  30.     return resultStr;
  31. }
  32.  
  33. int main() {
  34. 	    const char* src = "abc*x*asd**as*e";
  35.     const char* subStr = "12345";
  36.     char delim = '*';
  37.  
  38.     char* res = makeString(src, subStr, delim);
  39.  
  40.     std::cout << "res = " << res << std::endl;
  41. 	return 0;
  42. }
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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res = abc*12345x*12345asd*12345*12345as*12345e
https://ideone.com/sY8LPJ
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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