Copy Code code as follows:
#include <stdio.h>
#include <stdlib.h>
#define Epsinon 1e-3
#define ABS (A) (((a) >0)? ( A):(-a))//? : expression nesting is not supported
#define ZERO (x) ((x) >-epsinon && (x) <epsinon)
#define MAX (A,b) ((a) > (b))? ( A):(B))
#define MIN (A,b) (((a) < (b))? ( A):(B))
Float A, B, C;
Float Max, Mid, Min;
char input_err_flag = 0;
char judge_err_flag = 0;
int equal (float A, float b)
{
float tmp;
TMP = A-b;
TMP = ZERO (ABS (TMP));
return TMP;
}
void input (void)
{
A = b = c = 0;
printf ("Enter a value of three edges:");
scanf ("%f%f%f", &a, &b, &c);
if (!) ( a>0) | | ! (b>0) | | ! (c>0))
{
Input_err_flag = 1;
}
}
void sort (void)
{
max = max (max (a,b), c);
min = min (min (a,b), c);
if (MAX (A,B) < C)
Mid = MAX (a,b);
Else
Mid = MAX (MIN (a,b), c);
}
void judge (void)
{
Float Max_square, Mid_square, Min_square, TMP;
if (Max >= (mid+min))
{
Judge_err_flag = 1;
}
Else
{
Max_square = max * MAX;
Mid_square = mid * mid;
min_square = min * min;
TMP = Mid_square + min_square;
if (equal (mid,min) | | | equal (MAX, mid)
{
if (Equal (Mid, Min))
{
if (mid = = max)
Puts ("equilateral.") ");
else if (equal (Max_square, TMP))
Puts ("isosceles right-angled triangle.") ");
else if (Max_square < TMP)
Puts ("Isosceles acute triangle.") ");
Else
Puts ("isosceles obtuse.") ");
}
Else
{
if (Equal (min, mid))
Puts ("equilateral.") ");
Else
Puts ("Isosceles acute triangle.") ");
}
}
else if (equal (Max_square, TMP))
Puts ("The right-angled triangle." ");
else if (Max_square < TMP)
Puts ("acute triangle.") ");
Else
Puts ("obtuse.") ");
}
}
int main (void)
{
Char CS, ch;
Todo
{
Input ();
Sort ();
Judge ();
if (Input_err_flag)
{
Input_err_flag = 0;
while ((Cs=getchar ())!= ' \ n ' && (Cs=getchar ())!=eof);
printf ("Input error, a B c must be greater than 0, new input (y/n):");
}
else if (Judge_err_flag)
{
Judge_err_flag = 0;
while ((Cs=getchar ())!= ' \ n ' && (Cs=getchar ())!=eof);
printf ("Group is not triangular, re-enter (y/n):");
}
Else
{
while ((Cs=getchar ())!= ' \ n ' && (Cs=getchar ())!=eof);
printf ("Enter a second set of data (y/n):");
}
ch = getchar ();
}
while (ch== ' y ' | | | ch== ' y ' | | | | ch== ' \ n ');
Puts ("goodbye!");
return 0;
}
