# C++ take integer part of double

I wouldn't use the phrase "round down", because that could be interpreted as rounding How do I get it to correctly round? Return: The function returns the fractional value of k. Learn more. Integer part is stored in the memory address pointed by the pointer which is passed as second argument in the function and the fractional part is returned by the function. Error: No particular error raised by this function. Load Comments.

• double value to int value C++ Forum
• C++ modf() C++ Standard Library
• stdmodf, stdmodff, stdmodfl
• modf C++ Reference
• modf() in C/C++ GeeksforGeeks

• The integer part is stored in the object pointed by intpart, and the fractional part is cast x to a double before calculations (defined for T being any integral type). double floor (double x); floor example */ #include /* printf */ #include /* floor */ int main () { printf ("floor of is %.1lf\n", floor ()); printf.

### double value to int value C++ Forum

Trying to write a program which returns the integer part of any number Primitive type deprecation into an integer from a double will do this. Thanks for the help man, i've only been taking the class for about 2 weeks still.
As proposed by many others, one solution is to add 0.

### C++ modf() C++ Standard Library

› cpp › numeric › math › modf.

## stdmodf, stdmodff, stdmodfl

long double modf (long double x, long double* iptr). long double If no errors occur, returns the fractional part of x with the same sign as x. double x = ; std::cin >> x; int y = int(x * ); std::cout << "Integral To get the integer part convert to int, the fractional part is number.
Error: No particular error raised by this function. I have a double call it xmeant to be 55 but in actuality stored as Asked 7 years, 8 months ago. Blood is money movie Featured on Meta. Upvotes on questions will now be worth the same as upvotes on answers. BaCaRoZzo 6, 6 6 gold badges 39 39 silver badges 65 65 bronze badges. Exceptions associated with this function: If anything other then a float, double or integer number is passed, it returns a type error. I could never remember the C type promotion rules and I think that it doesn't hurt to state type casts explicitly everywhere, them being such a sticky issue. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.
The floor() function in C++ returns the largest possible integer value which is less floor(float x); long double floor(long double x); double floor(T x); // For integral.

The modf() function in C++ breaks a number into integral and fractional part. float* intpart); long double modf (long double x, long double* intpart); double modf.

Video: C++ take integer part of double Data Types (Int, Float, Double, String, Char) - Intro For Beginners to C++ Tutorial #4

All the functions available in this library take double as an argument and return Integer part is stored in the memory address pointed by the pointer which is.
A follow up question might be why the float isn't stored as exactly The cast is unnecessary; the result will be implicitly converted to int.

Writing code in comment?

## modf C++ Reference

It is worth noting that what you're doing isn't rounding, it's casting. NickXTsui did you see the last sentence? Casting is not a mathematical operation and doesn't behave as such. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.

## modf() in C/C++ GeeksforGeeks 