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Why the printf function is able to print 28 decimal digits, if the float has only 24-bits ma...

6.5.2.2, paragraph 6 If the expression that denotes the called function has a type that does not include a prototype, the integer promotions are performed on each argument, and arguments that have type float … you can print more than 7 decimal digits, because your float is converted to a double behind the scenes. …
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invalid operands to binary expression

Line 1: OK Line 2: If you have declared total_float as a float before this code snippet it's OK. Line 3: That is not the correct use of roundf(). … I'll give you just the signature of the functions, which is float roundf(float x). Line 4: I think you want to write printf("%d", total_int);. …
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