Xcode (C) "Check dependencies" and "Error: Executable doesn't exist" - c

Question

I'm doing a school project in C using xcode. The task is to create a command line application that checks if and how many times a word appears in a text file. So far I've just created the first step of the code, I have set the first argue argument to "hej" even though Im not using the word yet, and because of the first filename is not entered and therefore NULL, I have set it to be an existing file called "hej.txt", in order to test my code as I go.
This bit worked before:
#include "stdio.h"
#include "string.h"
struct fileSearch
{
char *inFile;
char *outFile;
char *searchWord;
};
int main(int argc, char *argv[])
{
int index = 0;
struct fileSearch f;
f.searchWord = argv[1];
FILE *searchFile;
//For-loop to assign filenames
for(index = 0; index < argc ; ++index)
{
if((strcmp(argv[index], "-i") == 0) && argv[index] != NULL && strcmp(argv[index + 1], "-o") != 0)
{
f.inFile = argv[index + 1];
}
if((strcmp(argv[index], "-o") == 0) && argv[index] != NULL && strcmp(argv[index + 1], "-c") != 0)
{
f.outFile = argv[index + 1];
}
}
if (f.searchWord == NULL)
{
printf("You didnt enter a search word");
}
if (f.inFile == NULL)
{
f.inFile = "hej.txt";
}
if (f.outFile == NULL)
{
f.outFile = "stdout.txt";
}
printf("%s & %s & %s", f.searchWord, f.inFile, f.outFile);
return 0;
}
It then printed out the search word, the input filename and the output filename.
Then I added the next step of the code where it would open the text file "hej.txt" and then read the strings and print them.
#include "stdio.h"
#include "string.h"
struct fileSearch
{
char *inFile;
char *outFile;
char *searchWord;
};
int main(int argc, char *argv[])
{
int index = 0;
struct fileSearch f;
f.searchWord = argv[1];
FILE *searchFile;
//For-loop to assign filenames
for(index = 0; index < argc ; ++index)
{
if((strcmp(argv[index], "-i") == 0) && argv[index] != NULL && strcmp(argv[index + 1], "-o") != 0)
{
f.inFile = argv[index + 1];
}
if((strcmp(argv[index], "-o") == 0) && argv[index] != NULL && strcmp(argv[index + 1], "-c") != 0)
{
f.outFile = argv[index + 1];
}
}
if (f.searchWord == NULL)
{
printf("You didnt enter a search word");
}
if (f.inFile == NULL)
{
f.inFile = "hej.txt";
}
if (f.outFile == NULL)
{
f.outFile = "stdout.txt";
}
printf("%s & %s & %s", f.searchWord, f.inFile, f.outFile);
//Open file and read
char str[60];
searchFile = fopen(f.inFile, "r");
if(searchFile = fopen(f.inFile, "r") == NULL)
{
printf("Error: There is no file with that name.");
return -1;
}
if(searchFile == NULL)
{
printf("The file is empty");
return -1;
}
while(fgets(str, 60, searchFile) != NULL)
{
puts(str);
}
fclose(searchFile);
return 0;
}
However now it builds the code successfully but when I try to run it, I get this error message:
"error: executable doesn't exist: '/Users/Slattegard/Library/Developer/Xcode/DerivedData/Coursework-chwsqczjjgxcyegnxgysiaigslvq/Build/Products/Debug/Coursework'
error: failed to launch '/Users/Slattegard/Library/Developer/Xcode/DerivedData/Coursework-chwsqczjjgxcyegnxgysiaigslvq/Build/Products/Debug/Coursework'"
and the Issue Navigator gives me this message:
"Check dependencies
warning: no rule to process file '/Users/Slattegard/Documents/Coursework/Coursework/Find.c' of type sourcecode.c for architecture x86_64"
Anyone know where I am going wrong?