code a program to read a floating point value from standard input, then output the largest integer smaller than or equal to this value; the nearest

1. code a program to read a floating point value from standard input, then output
2. the largest integer smaller than or equal to this value;
3. the nearest integer to this value, with halfway values rounded away from zero;
4. the smallest integer larger than or equal to this value
5. The output integers should be separated by a space character and followed by a newline character.
6. The output values should not have any trailing zeros: e.g. "2" not "2.0".
7. Sample input: 

3.1415

1. Corresponding output: 

3 3 4

programming in c (not c++)