Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a C program that reads integer values from stdin, separated by one or more spaces or newlines, until reaching EOF.

 Once we have entered all our integers, we may have to press Enter before pressing Ctrl+d.
 This signifies that we do not have to create a function, we can implement this vertical histogram

program within our main(...) function.
 Save your program as verticalHistogram.c

  •   The input contains no more than 80 values.
     Why? Because a standard terminal window is 80 character-columns across.

  •   The input is guaranteed to be well-formed.

  •   On standard output (stdout), it renders a simple vertical column graph representation of the input values (i.e., a vertical histogram), in order left to right, using hash '#' characters as shown in the examples on the next slides. The number of hashes '#' printed in each column

    should be equal to the corresponding input value.

     

 The area above a completed column should be filled with space characters. 

 Ignore empty lines in the input. Do not output a column for an empty line in the input.

 The entire graph must end with a newline character.  Hint:

 In order to plot a histogram vertically, we need to have finished reading all the input before we start drawing the histogram on stdout. An array is suitable for this.

 If we limit the number of columns we can graph to a maximum of 80, we know how large an array we need to allocate and this program is simple to write.

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