Open file with user input (string) - C

Question

I\'m trying to figure out how user input can be used as a filename in C. Here\'s the simple program I wrote.

#include 
#define MAX 100

int main()         


        

Answer 1

You have to add ".txt" extension and then it will work.
The following program opens a txt file in the same directory as the name of the following date:

#include
#include
int main()
{
    char a[1000000],s[20];
    strcpy(s,__DATE__);
    int i,j,k,l;
    strcat(s,".txt");
    printf("%s",s);
    FILE *f,*ff;
    f=fopen(s,"w");
}