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The test file for "character_finder" function

The Walnut Tree

my head foaming clouds, sea inside me and out I am a walnut tree in Gulhane Park an old walnut, knot by knot, shred by shred Neither you are aware of this, nor the police

I am a walnut tree in Gulhane Park My leaves are nimble, nimble like fish in water My leaves are sheer, sheer like a silk handkerchief pick, wipe, my rose, the tear from your eyes My leaves are my hands, I have one hundred thousand I touch you with one hundred thousand hands, I touch Istanbul My leaves are my eyes, I look in amazement I watch you with one hundred thousand eyes, I watch Istanbul Like one hundred thousand hearts, beat, beat my leaves

I am a walnut tree in Gulhane Park neither you are aware of this, nor the police

Nazim Hikmet

translated from Turkish by Gun Gencer

You will write a function called as "character_finder" which will find the number of existence of as specific character in a text file. The function will take two input arguments; i) fileName" as the char vector of the filename and ii) the character as the specific character that will be counted. The returning argument will be called as numberOfChar, the number of characters that are found. If the input argument character is not a valid char or if the file does not exist in the working directory, the function will return -1. The test file that can be used to test your code is attached to this question with the name of "test_file.txt. Please test your code with that file and compare your results with the below test cases. Example usages of the function is given below; Please upload your written function as a m.file (if .m file type is not supported, please upload your function as a .txt file). >> charnum = character finder ('test file.txt', 't') please upload your function as a .txt file). >> charnum = character_finder('test_file.txt', 't') charnum = 39 >> charnum = character_finder('test_file.txt', 'f') charnum = 7 >> charnum = character_finder('test_file.txt', 'T') charnum = charnum 39 >> charnum = character_finder('test_file.txt', 'f') charnum = 7 >> charnum = character_finder ('test_file.txt', 'T) charnum = 3 >> charnum = character_finder ("test_file.txt', '&') charnum = 0