where is my wrong reading from file and write

[Ph0x]

input the in.txt is 1 2 4 5
the result is:6 nonetheless i can't write it on the out.txt
thank you for all appreciated answers

#include <stdio.h>

void ad( FILE* fptr_in, FILE* fptr_out);

int main(){

    FILE *pFile_in;
    FILE *pFile_out;

        pFile_in = fopen ("in.txt","r+");
    pFile_out = fopen ("out.txt","w+");

        fprintf (pFile_out, "%s\n","ad:");
    ad(pFile_in, pFile_out);

    return 0;
}
void ad( FILE* fptr_in, FILE* fptr_out){




    fptr_out=fopen("out.txt","w");
    fprintf(fptr_out,"%d",(2+3));
    fclose(fptr_out);

}

[Matticus]

How To Ask Questions The Smart Way

You need to be more detailed with your problem.

What is the program supposed to do?
What is the input supposed to be?
What is the output supposed to be?
What is the actual output?

And please try to ask your question more clearly.

It would also help to post a small sample of the input file, when one is required for the program.

[Ph0x]

How To Ask Questions The Smart Way

You need to be more detailed with your problem.

What is the program supposed to do?
What is the input supposed to be?
What is the output supposed to be?
What is the actual output?

And please try to ask your question more clearly.

It would also help to post a small sample of the input file, when one is required for the program.

i fixed

[Matticus]

i fixed

Hardly. You're still missing a lot of the information I suggested, such as what the program is trying to accomplish.

I did notice something though. Answer me two things:

1. What is line 11 doing?
2. What is line 37 doing?

[Ph0x]

Hardly. You're still missing a lot of the information I suggested, such as what the program is trying to accomplish.

I did notice something though. Answer me two things:

1. What is line 11 doing?
2. What is line 37 doing?

open two times thank you