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A Gentle Introduction to
C++ Programming

Convert a String to a Number

 

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Convert a String to a Number

1. [ C++ ] String to int


Big

The value "1234" is a string, you need to treat it as a number - to add 1, giving 1235.

The first example uses the function atoi (ASCII to integer), it works on the char [] or "C String" structure.

The to convert stdlib strings you can use the >> operator on stringstream class