CSC231 Homework 7 2017

--D. Thiebaut (talk) 08:28, 8 April 2017 (EDT)

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Page under construction!

Problem #1: Programming in C

• Create the C program below, and run it. Name it hw7_1.c. It will serve as the seed for your solution program for Problem 1.

/*
hw7_1.c
D. Thiebaut

This program gets a sstring from the command line and prints it on the screen.

*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

//--------------------------------------------------------------------
//                           MAIN  PROGRAM
//--------------------------------------------------------------------
void main( int argc, char *argv[] ) {
  //--- variables ---
  int n, i, name;
  char sentence[100];
  char stars[100];

  //--- see if use entered arguments on the command line ---
  if ( argc < 2 ) {
    //--- No, didn't.  Print syntax information and quit ---
    printf( "Syntax: %s string [string...]\n", argv[0] );
    exit( 1 );
  }

  //--- print the arguments back to the user, with a dash in between ---
  for ( i = 1; i < argc; i++ ) {
    if ( i > 1 )
      printf( "-" );
    printf( "%s",  argv[i] );
  }
  printf( "\n" );

  //--- Done! ---
}

• Here are different ways of using it...

231b@aurora ~/hw/hw7 $ gcc -o hw7_1 hw7_1.c
231b@aurora ~/hw/hw7 $ ./hw7_1 hello
hello
231b@aurora ~/hw/hw7 $ ./hw7_1 hello there
hello-there
231b@aurora ~/hw/hw7 $ ./hw7_1 hello there CSC231!
hello-there-CSC231!

Your Assignment

• Modify hw7_1.c so that it creates a logo with the sentence entered by the user on the command line, as illustrated in the examples below.
• Here are some examples of what your program should emulate exactly:

231b@aurora ~/hw/hw7 $ ./hw7_1 hello
*
**
***
****
*****
******
*******
********
* hello *
********
*******
******
*****
****
***
**
*
231b@aurora ~/hw/hw7 $ ./hw7_1 my hat
*
**
***
****
*****
******
*******
********
*********
* my hat *
*********
********
*******
******
*****
****
***
**
*
231b@aurora ~/hw/hw7 $ ./hw7_1 A
*
**
***
****
* A *
****
***
**
*
231b@aurora ~/hw/hw7 $ ./hw7_1 this works well
*
**
***
****
*****
******
*******
********
*********
**********
***********
************
*************
**************
***************
****************
*****************
******************
* this works well *
******************
*****************
****************
***************
**************
*************
************
***********
**********
*********
********
*******
******
*****
****
***
**
* 

Submission

• Submit your program in the Homework 7 section on Moodle.

Problem 2

...to be announced soon...

Problem 3

...to be announced soon...