So I am writing a CS code for a project and I keep getting c

So I am writing a CS code for a project and I keep getting \"cannot open file\" I know I put it into my code, but I don\'t know why it won\'t execute after i input ./a.out I put in gcc -Wall contents3.c and no errors or warnings pop up. So I figure everything is working right. But after that, I get \"Cannot open file\". So I am wondering what I can do to get this settled out properly. I am putting the outcome of the project and my code. Please someone help me!

#include <stdio.h>

#include <stdlib.h>

#include <math.h>

#include <string.h>

#include <ctype.h>

#include <time.h>

int len = 0;

int sp = 0;

int lwrcaseCount = 0;

int uprcaseCount = 0;

int digitCount = 0;

int specialCount = 0;

char data[200];

int frequency[84];

int sortFrequency[84][2];

char string[] = \"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!\\\"#$%&\'()*+,-./:;<=>?@[/]^_`{|}~\";

//printf(\"\ \");

//To sort based on frequency of characters

/*void sort()

{

int max, loc, temp, x, y;

//Loops till end - 1 position of the frequency array

for(x = 0; x <= 84 - 1; x++)

{

//Initializes the max to the x position of the frequency array assuming it as maximum

max = frequency[x];

//Initializes of loc to x assuming location x contains the maximum value

loc = x;

//Loops through x + 1 to length - 1 of frequency array

for(y = x + 1; y <= 95 -1; y++)

{

//If current position of the frequency of the array is greater than the max

//then update the max with the current value of frequency and update the loc

if(frequency[y] > max)

{

max = frequency[y];

loc = y;

}//end of if

}//end of for loop

//If loc is not x then swap

if(loc != x)

{

temp = frequency[x];

frequency[x] = frequency[loc];

frequency[loc] = temp;

}//end of if

//Store the location of the maximum value in the zero column position of row x

sortFrequency[x][0]= loc;

//Store the maximum value in the first column position of row x

sortFrequency[x][1] = max;

}//end of for loop

}//end of function*/

void sort()

{

for(int i = 0; i < 84; i++)

{

sortFrequency[i][0] = i;

sortFrequency[i][1] = frequency[i];

}

for(int i = 0; i < 84-1; i++)

for(int j = 0; j < 84-i-1; j++)

if(sortFrequency[j][1] < sortFrequency[j+1][1])

{

int temp = sortFrequency[j][1];

sortFrequency[j][1] = sortFrequency[j+1][1];

sortFrequency[j+1][1] = temp;

temp = sortFrequency[j][0];

sortFrequency[j][0] = sortFrequency[j+1][0];

sortFrequency[j+1][0] = temp;

}

}

//To count frequency of each character

void frequencyCount()

{

int c, d;

//Loops till the length of the inputed data

for(c = 0; c < len; c++)

{

//Loops from 33 to 126 which is the ascii values of required characters range

for(d = 0; d < 84; d++)

{

//If the data in the current position is equal to the acii value

if(data[c] == string[d])

//Frequency 0 position is equal to 33 ascii.

//So 33 is deducted

frequency[d]++;

}//end of for loop

}//end of for loop

}//End of function

//Initializes the frequency array to zero

void initialize()

{

int c;

for(c = 0; c < 84; c++)

frequency[c] = 0;

}

//Read the file which contains data

void readFile()

{

//File pointer created

FILE *fptr;

char ch;

//File opened in read mode

fptr = fopen(\"Data1.txt\", \"r\");

//If fptr is null show error message and terminate

if (fptr == NULL)

{

printf(\"Cannot open file \ \");

exit(0);

}//end of if

//read the first character from the file

ch = fgetc(fptr);

//Loops till end of file

while (ch != EOF)

{

//Stores the character in data array

data[len++] = ch;

//reads another character from the file

ch = fgetc(fptr);

}//end of while

//close file

fclose(fptr);

}//End of method

//Display the required information

void dispData()

{

int c;

//Displays the file contents

printf(\"\ Entered Data \ \");

for(c = 0; c < len; c++)

printf(\"%c\", data[c]);

printf(\"\ %d characters\", len - sp);

printf(\"\ lowercase = %d and \", lwrcaseCount);

printf(\"uppercase = %d and \", uprcaseCount);

printf(\"digit = %d\", digitCount);

printf(\" and special = %d\ \ \", specialCount);

for(c = 0; c < 84; c++)

{

if(c == 0 || sortFrequency[c][1] != sortFrequency[c-1][1])

printf(\"\ Characters occurring %d times : \", sortFrequency[c][1]);

printf(\"%c \", string[sortFrequency[c][0]]);

}

/*for(c = 0; c < 95; c++)

{

if(sortFrequency[c][1] != 0)

printf(\"\ Character %c occurs %d Times \", sortFrequency[c][0]+33, sortFrequency[c][1]);

}//end of for

printf(\"\ Characters not found in input: \");

for(c = 0; c < 95; c++)

{

if(sortFrequency[c][1] == 0)

//printf(\"\ Character %c occurs %d Times \", sortFrequency[c][0]+33, sortFrequency[c][1]);

printf(\"%c \", sortFrequency[c][0]);

}//end of for*/

printf(\"\ \");

}//end of function

//Counts lowercase, uppercase, digits, special characters and total characters

void count()

{

int c;

for(c = 0; c < len; c++)

{

if(islower(data[c]))

lwrcaseCount++;

else if (isupper(data[c]))

uprcaseCount++;

else if (isdigit(data[c]))

digitCount++;

else if (ispunct(data[c]))

specialCount++;

else

sp++;

}//end of for

}//end of function

//Main function

int main()

{

//Calls the methods

initialize();

readFile();

count();

frequencyCount();

//dispData();

sort();

dispData();

return 0;

}

Project overview: Ever wonder what is in a file? Ever wonder how many times each character actually occurs in the file? Probably not most people never think of things like that. This program takes an input source and tells the user what characters that source contains. It does not worry about whitespace (spaces, tabs, newlines) but instead focuses on the printable characters. These include: 26 upper-case letters, A-Z and 26 lower-case letters, a and 10 digits, 0-9 32 special characters: \"#$S&\' C [V1 This program reads from standard input until end-of-file. Once it hits end-of-file, it tells the user what characters it saw, ordered from the most-occurring character down to the characters that it did not see. As an example, if the user entered the input below (shown in re the program generates the output shown in blue The Quick Brown Fox Jumps over the Lazy Old Dog 123456789012345 the quick brown fox jumps over the lazy old dog 105 characters lower case 67 and uppercase 9 and digit-15 and special 14 Characters occurring 8 times o Characters occurring 6 times e Characters occurring 4 times h r u d l t Characters occurring 3 times Characters occurring 2 times a c g i k m n p s v w x y z O 1 2 3 4 5 Characters occurring 1 times b f j q B D F J L Q T 0 6 7 8 9 Characters not found in the input A C E G H I K M N P R S U V W X Y Z What You Need To Do Create a directory project3 on your machine. In that directory, create a file named contents.c In contents. c, write the code needed to find out what characters exist in the input. Make sure that you: o Have a header block of comments that includes your name and a brief overview of the program. Read from standard input until you hit end-of-fil o Prints the expected output in a clear, legible format Hint #1: There are some good built-in character functions in ctype.h that make coding easier. Make sure you understand the functions isdigit and isupper and islower and ispunct. Hint #2: You can use an array or arrays to count the number of times you see each printable character Initialize each element to zero and increment a given location when you see that letter) To test your program with various inputs, you can redirect input so that it comes from a file instead of the keyboard. As an example, if you wanted to see what the contents of your contents.c file was, you would type the command /a.out contents .c (using a.exe instead of a.out in Windows

Solution

I read the code and the project description both. You have opened a file directly in the code using file pointer so it seems that you don\'t want to give input from keyboard. So, by going through the code, the error you are getting \"can\'t open file\" can be resolved as below:

First, make sure you are having project3 directory and your contents.c file is placed in it.

You have not provided the path for Data1.txt which you are opening in reading mode. So, it must be placed with the contents.c inside project3.

Check that you have entered the filename exactly \"Data1.txt\" as you have written in the code because the Linux file system is case sensitive so \'d\' and \'D\' are different for it.

Now open the project3 directory. Right-click in the free area and select \"Open in Terminal\". This will open a terminal window with project3 directory path displaying as present working directory.

Now run the commands you have ran before: gcc -Wall contents.c

And after that ./a.out. You will get the output which is displaying the similar kind of output given in the problem definition when I placed the content of Data1.txt as \"The Quick ......\" ( every line ).

This will solve your problem for sure.

Do comment if there is any query. Thank you. :)