ECE 8473 - Assignment #1 - Due: 22 Sept 2022

Programs must compile with no warnings or errors using:

  gcc -std=c11 -pedantic -Wall

References: printf format list; limits.h, float.h, errno.h, perror, tgmath.h, time.h

1. a1/p1.c - limits.h

   Write a C program which displays the names and values of the following constants from limits.h:

     CHAR_BIT, CHAR_MIN, CHAR_MAX, SCHAR_MIN, SCHAR_MAX, UCHAR_MAX
   
     SHRT_MIN, SHRT_MAX, USHRT_MAX
   
     INT_MIN, INT_MAX, UINT_MAX
   
     LONG_MIN, LONG_MAX, ULONG_MAX
   
     LLONG_MIN, LLONG_MAX, ULLONG_MAX 
   

   and also computes at run-time (without using any predefined constants or assumptions) and displays the value of UCHAR_MAX.

   ---

2. a1/p2.c - float.h

   Write a C program which displays the names and values of the following constants from float.h:

     FLT_MIN, FLT_TRUE_MIN, FLT_MAX, FLT_EPSILON
   
     DBL_MIN, DBL_TRUE_MIN, DBL_MAX, DBL_EPSILON
   
     LDBL_MIN, LDBL_TRUE_MIN, LDBL_MAX, LDBL_EPSILON
   

   and also displays the values of DBL_TRUE_MIN/2, stored in an double variable, and DBL_MAX*2, stored in a double variable.

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3. a1/p3.c - sqrt(-1)

   Write a C program which computes and displays the value of sqrt(-1). Include <errno.h> and after calling sqrt() display the value of errno and also call perror().

   Also compute and display the value of some tgmath.h function (your choice) with a valid input which produces a range error, i.e. overflow. Display the value of errno and also call perror().

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4. a1/p4.c - 32-bit Year 2038 Problem

   Write a C program which displays the argument and result values of ctime() from time.h for the following argument values:

     INT_MAX-1
     INT_MAX
     INT_MAX+1
     0
     -1
     INT_MIN
   

   Note that computing INT_MAX+1 requires use of a data type larger than int, e.g. long long.

   If you can, compile in 32-bit mode using gcc -m32 option to see the problem.