CSC231 Optional Homework 9 2017

--D. Thiebaut (talk) 11:10, 22 April 2017 (EDT)

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Problem 1: C Functions

Write a C program that contains only C functions. The functions will be called by an external main program. This is very similar to the the last homework assignment, except then it was done in assembly.

Functions

You have to write 3 functions: getMin(), zap() and merge().

getMin()

Receives 3 ints as parameters and returns the smallest.

Example

  printf( "Min of -10, 1, 10 = %d\n", getMin( -10, 1, 10 ) );
  printf( "Min of -10, 1, 10, -20, 2 = %d\n", getMin( getMin( -10, 1, 10 ), -20, 2 ) );
  // outputs:
  //  Min of -10, 1, 10 = -10
  //  Min of -10, 1, 10, -20, 2 = -20

zap()

Receives two strings as parameters and modifies the first one by finding the first

string in it, and replacing it with dashes.

Example

  char s1[] = "Mississippi Burning";
  char s2[] = "Mississippi Burning";

  //--- test zap ---
  printf( "s1 = %s\n", s1 );
  zap( s1, "ss" );
  printf( "zap(s1) = %s\n", s1 );

  printf( "s2 = %s\n", s2 );
  zap( s2, "tt" );
  printf( "zap(s2) = %s\n", s2 );
 
  // output:
  // s1 = Mississippi Burning
  // zap(s1) = Mi--issippi Burning 
  // s2 = Mississippi Burning
  // zap(s2) = Mississippi Burning