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A program written in C to print a histogram of the
frequencies of different characters (printable)
in its input as horizontal bars
Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.
Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.
FOR YOUR OWN SAFETY, PLEASE:
1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
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frequencies of different characters (printable)
in its input as horizontal bars
- #include<stdio.h> /* C Standard Input and Output Library*/
- /*Variable declarations*/
- char
string_of_characters[
200
]
;
- int
character_frequency_counter;
- int
counter;
- int
print_histogram_counter;
- int
output_counter;
- char
frequency_array[
26
]
[
2
]
=
{
'a'
,
0
,
'b'
,
0
,
'c'
,
0
,
'd'
,
0
,
'e'
,
0
,
'f'
,
0
,
'g'
,
0
,
'h'
,
0
,
'i'
,
0
,
'j'
,
0
,
'k'
,
0
,
'l'
,
0
,
'm'
,
0
,
'n'
,
0
,
'o'
,
0
,
'p'
,
0
,
'q'
,
0
,
'r'
,
0
,
's'
,
0
,
't'
,
0
,
'u'
,
0
,
'v'
,
0
,
'w'
,
0
,
'x'
,
0
,
'y'
,
0
,
'z'
,
0
}
;
- /*Functions declaration - prototyping*/
- char
frequency_of_characters (
char
string_of_characters[
50
]
)
;
- int
printout_of_character_frequencies(
char
frequency_array[
25
]
[
2
]
)
;
- int
main(
void
)
/* The main method*/
- {
/* Brief detail on the screen about the program*/
- printf
(
" /*************************************************************************\n
* Mureithi David Wachira *\n
* P15/2204/2011 *\n
* *\n
* University of Nairobi *\n
* School of Computing & Informatics *\n
* *\n
* Course: PROGRAMMING AND PROBLEM SOLVING (CSC 121) *\n
* Date: Thursday 11th April 2013 *\n
* *\n
* A program to print a histogram of the *\n
* frequencies of different characters (printable) *\n
* in its input (draw horizontal bars) *\n
* *\n
*************************************************************************/\n
"
)
;
- printf
(
"Please enter a string of characters \n
"
)
;
/* Prompt to instruct use to enter a string of characters*/
- gets
(
string_of_characters)
;
/* Capture of the string by the system using function gets()*/
- frequency_of_characters (
string_of_characters)
;
/* Call of function frequency_of_characters()*/
- printout_of_character_frequencies(
frequency_array)
;
/* Call of function printout_of_character_frequencies()*/
- return
0
;
/* An indication that the program runs successfully*/
- }
/* The end of the main method*/
- char
frequency_of_characters (
char
string_of_characters[
50
]
)
/* Function to calculate the frequencies of the characters and storage of the results in an array*/
- {
- for
(
counter=
0
;
counter<=
strlen
(
string_of_characters)
;
counter++
)
/* Loop to go through the array of characters (string) */
- {
- for
(
character_frequency_counter=
0
;
character_frequency_counter<=
25
;
character_frequency_counter++
)
/* Loop to go through the frequency array*/
- {
- if
(
frequency_array[
character_frequency_counter]
[
0
]
==
string_of_characters[
counter]
)
/* Comparability of a character to characters in the string*/
- {
- frequency_array[
character_frequency_counter]
[
1
]
=
(
frequency_array[
character_frequency_counter]
[
1
]
)
+
1
;
/* If character if found its count is incremented by one(1)*/
- }
- }
- }
- return
frequency_array;
/* The function returns an array to the main method (caller)*/
- }
- int
printout_of_character_frequencies(
char
frequency_array[
25
]
[
2
]
)
/* Function to print out the results*/
- {
- printf
(
"\n
\n
%-10s%-8s%15s\n
"
,
"Letter"
,
"Frequency"
,
"Histogram"
)
;
- for
(
output_counter=
0
;
output_counter<=
25
;
output_counter++
)
/* Loop to print the elements of the frequency array*/
- {
- printf
(
"%3c%12d "
,
frequency_array[
output_counter]
[
0
]
,
frequency_array[
output_counter]
[
1
]
)
;
- for
(
print_histogram_counter=
1
;
print_histogram_counter<=
frequency_array[
output_counter]
[
1
]
;
print_histogram_counter++
)
/* Loop to print the horizontal bars of the histogram*/
- {
printf
(
"%c"
,
'*'
)
;
}
- printf
(
"\n
"
)
;
/* Next line*/
- }
- return
0
;
/* Ends after the function executes successfully*/
- }
- <
c>
Note: Due to the size or complexity of this submission, the author has submitted it as a .zip file to shorten your download time. After downloading it, you will need a program like Winzip to decompress it.
Virus note: All files are scanned once-a-day by SourceCodester.com for viruses, but new viruses come out every day, so no prevention program can catch 100% of them.
FOR YOUR OWN SAFETY, PLEASE:
1. Re-scan downloaded files using your personal virus checker before using it.
2. NEVER, EVER run compiled files (.exe's, .ocx's, .dll's etc.)--only run source code.
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