Segmented function-2001 the computer research of Tsinghua University The real Problem (I set)

Title Description:

Write a program that calculates the value of the following segment function, Y=f (x).
y=-x+2.5; 0<=x<2
y=2-1.5 (x-3) (x-3); 2<=x<4
y=x/2-1.5; 4<=x<6

Input:

A floating-point number n

Output:

The test data may have multiple groups, for each set of data,
Output N corresponds to the piecewise function value: F (n). Results retain three decimal places

Sample input:

1

Sample output:

1.500

Problem Solving Code:

#include <stdio.h>intMain () {Doublex; Doubley;  while(SCANF ("%LF", &x)! =EOF) {        if(x >=0&& x <2) {y=-X +2.5; }        Else{            if(x >=2&& x <4) {y=2-1.5* (X-3) * (X-3); }            Else{                if(x >=4&& x <6) {y= x/2-1.5; }}} printf ("%.3lf\n", y); }    return 0;}

AC

To do the topic:

Practice Feel

Algorithm Analysis:

Water problem, very simple, examines the use of basic if else nesting, while examining character input and output control.

Segmented function-2001 the computer research of Tsinghua University The real Problem (I set)