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Format %lf in printf was not supported in old (pre-c99) versions of c language, which created superficial inconsistency between format specifiers for double in printf and scanf. In my earlier question i was printing a double using cout that got rounded when i wasn't expecting it. How can i make cout print a double using full precision?

It is simply two not s back to back. The first one simply inverts the truthy or falsy value, resulting in an actual boolean type, and then the. From what i have read, a value of data type double has an approximate precision of 15 decimal places. However, when i use a number whose decimal representation repeats, such as 1. 0/7. 0,.