c++ - Replace some character in string

Question

I have a string of 8 characters '00001111' I want to replace some specific index value. For example if I check stringName[2]=='0' and replce it using stringName.replace(2,2,"1") then it replaces but one character is missed at the end

if (xyz[3]=='0')
{
    xyz.replace(3,3,"1");
}
else
{
    xyz.replace(3, 3, "0");
}

Answer 1

The problem is misuse of the replace method, the first parameter is index of the start for replace, the second is length, and the third is the string that should be inserted. hence saying replace(2,2,"0") means replace the two chars that start at index 2 with "0" (a string of one char), that is why you have chars disappearing.

the solution is as people said, string[index_you_want_to_replace] = 'some_char'.