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C: Write a function to find a sub string in a given string and replace it with another string?

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C: Write a function to find a sub string in a given string and replace it with another string?
posted Apr 2, 2016 by anonymous

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An example would be helpful

1 Answer

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void replaceAll(std::string& str, const std::string& from, const std::string& to) {
if(from.empty())
return;
size_t start_pos = 0;
while((start_pos = str.find(from, start_pos)) != std::string::npos) {
str.replace(start_pos, from.length(), to);
start_pos += to.length(); // In case 'to' contains 'from', like replacing 'x' with 'yx'
}
}

answer Apr 5, 2016 by Shubham Singh
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