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How can I check if a string contains char?

I have a text file that I want to read. I want to know if one of the lines contains [

so I tried:

if(array[i] == "[")

But it doesn't work.

How can I check if a string contains a specific character?

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2 answers


Look at the documentation string::find

string::find 



std::string s = "hell[o";
if (s.find('[') != std::string::npos)
    ; // found
else
    ; // not found
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if the array is char * array or char array [], you can find char after a while:

while(i < nSize)
    if (array[i] == '[')


'[' is char, but "[" is a string

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