Wrong display of text file created by C program when opened in Notepad

#include<stdio.h>
#include<stdlib.h>
void init(char*filename)
{
    FILE* f = fopen(filename,"w");
    fprintf(f,"%d ",8);
    fprintf(f,"%d ",6);
    int i, j;
    for(i = 0; i < 8; i ++)
    {
        for(j = 0; j < 8; j ++)
        {
            fprintf(f,"%d ", rand()%6);
        }
    }    
    fclose(f);
}
int main()
{
    init("input.txt");
}

when I open file I see this:

*‸‶‵‵‴‴‵‴‰‰‴′‵‵‱″‱‵‱′″‰″‰′″‴‴″′′‵‵‰‵‰″‴‵‱‱‰‵″′″″′″‱‵‴‵′‴″″‱‵″‱‴‴‵′‰*

Why don't I see the values of rand()%6 that were printed to this file??

I use Dev-C++ 5.6.3 to run the program and save it with format .cpp, Open with Notepad