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I am trying to reduce a string by giving it to a function. For example, if i have "abrakadabra", the function shall return a string of "abrkd". Which means that all characters should exist only once in the return value.
I have the following function:
string textletters(string text) {
string ret = "";
for (unsigned i = 0; i < text.length(); i++) {
if (i == 0) {
ret += str;
} else {
bool exist = false;
for (unsigned j = 0; j < i; j++) {
if (text.at(i) == text.at(j) {
exist = true;
}
}
if (!exist) {
ret += str;
}
}
}
return ret;
}
I know that text.at(i) gives a char back. But I want to convert this char to a string so I can concatenate it.
842
We can convert a char to a string object in java by using the Character. toString() method.
2) Using string class operator = The one which we will be using today is: string& operator= (char c); This operator assigns a new character c to the string by replacing its current contents.
This last part of the definition is important: all C-strings are char arrays, but not all char arrays are c-strings. C-strings of this form are called “string literals“: const char * str = "This is a string literal.
Use push_back method to append single char to a std::string. You can also use operator += to do that.
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