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Each time I've tried this I've ended the program so the changes should happen.

I've fiddled around it little more and found out that after adding fseek(txt, 0L*sizeof(char), SEEK_CUR) between...

Hello.

I'm trying to skip line and input text which will overwrite the current one in .txt file.

I've tried this:



int main()
{

I stumbled upon a problem while I was coding.



void main()
{
int n;
do
{
printf("Write a number in interval [10,100]\n");

Thanks for all replies, I solved my problem .
The problem that I was experiencing with the program is just blank screen after I entered first 10 numbers.

Here's the working code:


...

Hello, I was creating a program that will see if the number is prime or not but unfortunately I encountered a problem.
This is the code I have so far:



#include<stdio.h>
void primefunc (int...