Task 1: Vertical Histogram You will write a program that prints a histogram of frequencies of letters in the English alphabet. The input will come from stdin. Your program should downcase all input letters and ignore symbols besides a to z. The output is a histogram rendered vertically. Please make sure you must support reading multiple lines if you pipe the input from a file using the cat command. Code and Compilation: Your code will be one standalone file called vert_hist. c. Use the following command to generate an executable vert_hist. Your code must compile clean with this command. gcc -Wall -W -pedantic -o vert_hist vert_hist.c Example: Below is an example assuming vert_hist has been compiled and lives in the current directory. Each * represents a count of 1. echo This Is a TeST--Hello, MississippI. Yippie | ./vert_hist * * * * * * * * abcdefghijklmnopqrstuvwxyz Hint: Learn about the function getchar. Furthermore, you can use cat and pipe to test this program. For example, the command "cat poem.txt | ./vert_hist” will read poem. txt and send it to the stdin of your program. Hint #2: A few functions in ctypes.h will prove to be useful. For example, what does tolower do? How about isalpha? Use the man command to find out.
Task 1: Vertical Histogram You will write a program that prints a histogram of frequencies of letters in the English alphabet. The input will come from stdin. Your program should downcase all input letters and ignore symbols besides a to z. The output is a histogram rendered vertically. Please make sure you must support reading multiple lines if you pipe the input from a file using the cat command. Code and Compilation: Your code will be one standalone file called vert_hist. c. Use the following command to generate an executable vert_hist. Your code must compile clean with this command. gcc -Wall -W -pedantic -o vert_hist vert_hist.c Example: Below is an example assuming vert_hist has been compiled and lives in the current directory. Each * represents a count of 1. echo This Is a TeST--Hello, MississippI. Yippie | ./vert_hist * * * * * * * * abcdefghijklmnopqrstuvwxyz Hint: Learn about the function getchar. Furthermore, you can use cat and pipe to test this program. For example, the command "cat poem.txt | ./vert_hist” will read poem. txt and send it to the stdin of your program. Hint #2: A few functions in ctypes.h will prove to be useful. For example, what does tolower do? How about isalpha? Use the man command to find out.
Chapter13: File Input And Output
Section: Chapter Questions
Problem 6PE
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Transcribed Image Text:Task 1: Vertical Histogram
You will write a program that prints a histogram of frequencies of letters in the English alphabet. The
input will come from stdin. Your program should downcase all input letters and ignore symbols besides
a to z. The output is a histogram rendered vertically. Please make sure you must support reading
multiple lines if you pipe the input from a file using the cat command.
Code and Compilation: Your code will be one standalone file called vert_hist. c. Use the following
command to generate an executable vert_hist. Your code must compile clean with this command.
gcc -Wall -W -pedantic -o vert_hist vert_hist.c
Example: Below is an example assuming vert_hist has been compiled and lives in the current
directory. Each * represents a count of 1.
echo This Is a TeST--Hello, MississippI. Yippie | ./vert_hist
*
*
*
%
abcdefghijklmnopqrstuvwxyz
Hint: Learn about the function getchar. Furthermore, you can use cat and pipe to test this
program. For example, the command "cat poem.txt | ./vert_hist" will read poem. txt and send
it to the stdin of your program.
Hint #2: A few functions in ctypes.h will prove to be useful. For example, what does tolower do?
How about isalpha? Use the man command to find out.
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