6.1 Getting Started 1

6.1 Getting Started 1

• Get textbook.
• Review Chapters Chapters 1 & 3, and Appendix E.
• Read Chapters 2.
• Setup or find an ANSI C Compiler to use.
• Run a program. (i.e. Hello world)

  
  /* Program to print "hello, world"                  */ 
  /* L Taber   October 13, 1992   PCC                 */
  /* Kernighan & Richie "The C Programming Language"  */ 
  /* Copyright 1978  page 6                           */
  
  #include <stdio.h> 
  
  main() 
  { 
  printf("hello, world\n"); 
  }
  

  When you run it is should look like this:

  hello, world
  

• Run limits.c

  /*H*****************************************
   * limits.c   
   * Louis Taber, PCC, Dec 14, 2000
   *******************************************/
  
  #include <limits.h>
  
  main()
  {
  printf( "Minimum and maximun values for"
          " various types.\n\n" );
  printf( "%d <= char <= %d\n", CHAR_MIN, CHAR_MAX );
  printf( "0 <= uchar <= %u\n", UCHAR_MAX );
  printf( "%d <= short <= %d\n", SHRT_MIN, SHRT_MAX );
  printf( "0 <= ushort <= %u\n", USHRT_MAX );
  printf( "%d <= int <= %d\n", INT_MIN, INT_MAX );
  printf( "0 <= uint <= %u\n", UINT_MAX );
  printf( "%ld <= long <= %ld\n", LONG_MIN, LONG_MAX );
  printf( "0 <= ulong <= %lu\n\n", ULONG_MAX );
   
  }
  

  When you run it is should look something like this:

  Minimum and maximun values for various types.
  
  -128 <= char <= 127
  0 <= uchar <= 255
  -32768 <= short <= 32767
  0 <= ushort <= 65535
  -2147483648 <= int <= 2147483647
  0 <= uint <= 4294967295
  -2147483648 <= long <= 2147483647
  0 <= ulong <= 4294967295
  
  

  Please note the limits of your compiler!

• Run the following 2 module program with a header.

  /*H******************************************************
   *   Program to check out development environment 
   * 
   * Louis Taber
   * December 5, 2000
   * CIS265
   *
   * mod-main.c
   *
   ********************************************************/
  
  #include <stdio.h>
  #include <math.h>
  #include "mod.h" 
  
  float sinandcos( float, float);
  int   iadd(int, int);
  
  int main(void)
  {
  int   a, b = CONSTANT_B, c = CONSTANT_C;
  float x, y = CONSTANT_Y, z = CONSTANT_Z;
  
  /* Print out header */
  
  printf("Your-name\n");
  printf("CIS 265 - Spring 2001 - Taber Lab - 4.1\n\n"); 
  
  /* Integer subroutine and constants */ 
  
  printf("b= %d, %08X    c= %d,  %0o\n", b, b, c, c);    
  a = iadd(b,c);
  printf("a = %07d\n\n",a);
  
  /* Floating point subroutine and constants */ 
  
  printf("y= %f, %18.12g\nz= %f, %18.12g\n\n", y, y, z, z);    
  x = sinandcos(y,z);
  printf("x=%+18.12lg\n", x);
  
  return 0;
  }
  
  

  and

  /*H******************************************************
   *   Program to check out development environment 
   * 
   * Louis Taber
   * December 5, 2000
   * CIS265
   *
   * mod-sub.c
   *
   ********************************************************/
  
  #include <math.h>
  
  int 
  iadd(int b, int c)
  {
  return b+c;
  }
  
  float
  sinandcos(float y, float z)
  {
  return sin( y ) + cos( z );
  }
  

  and

  /*H******************************************************
   *   Program to check out development environment 
   * 
   * Louis Taber
   * December 5, 2000
   * CIS265
   *
   * mod.h
   *
   ********************************************************/
  
  #define CONSTANT_B 12 
  #define CONSTANT_C 18
  #define CONSTANT_Y 1.1111111111111111111111
  #define CONSTANT_Z 2.2222222222222222222222
  
  

  I compile it with the following command:

  gcc -o mod mod-main.c mod-sub.c -lm
  

  My output looks like:

  Your-name
  CIS 265 - Spring 2001 - Taber Lab - 4.1
  
  b= 12, 0000000C    c= 18,  22
  a = 0000030
  
  y= 1.111111,      1.11111116409
  z= 2.222222,      2.22222232819
  
  x=    +0.28987121582
  

  There is nothing to turn in for this lab.

6.1 Getting Started 1