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How to read in/write to a file in Eclipse C [message #1869402]

Thu, 15 August 2024 20:34

Ria Prakash

Messages: 3
Registered: August 2024

Junior Member

I'm trying to read in data from a txt file into my main file and also to write some function output to a new file but have not had success in doing either.

Currently have these lines, where both pointers are always null, and I don't know why. I tried moving the c_readin file to the eclipse_workspace folder for this project itself, and the pointer was still null.

int main(void)
{
FILE *fptr1 = fopen("c_readin.txt", "r");
if(fptr1 == NULL)
{
printf("Noooooo!");
exit(1);
}

FILE *fptr = fopen("C:/Users/riaprakash/Desktop/ml_output.txt", "w");
if(fptr == NULL)
{
printf("Error!");
exit(1);
}

memcpy(printed_out, ml_data32, sizeof(printed_out));
fprintf(fptr, "%x\n", printed_out[0]);

fclose(fptr);

return 0;
}

[Updated on: Thu, 15 August 2024 20:36]

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