scanf ends my program and no error is thrown

I am a beginner in C and I encountered problems when dealing with scanf, hoping for an explanation behind this

this is my code

#include <stdio.h>
#include <math.h>
#include <string.h>

int fav_charac() {
    char *string = ""; 
    printf("whats your fav letter?: ");
    scanf("%s", string);                         // the problem
    printf("your fav letter is %s\n", string);
}

int main() {
    fav_charac();
    return 0;
}

and this is the program running

whats your fav letter?: a

C:\Users\DELL\source\repos\hello C\x64\Debug\hello C.exe (process 15052) exited with code -1073741819.
Press any key to close this window . . .

as you can see it exited right after an input is made, why?

>Solution :

The scanf will attempt to write to string, which is .rodata. That means, the Data in string can only be read from but not written to. Use char string[64]; or something similar. This will place the variable into .data. Also limit user input in scanf with scanf("%64s", string); so that scanf won’t write out of bounds.

Full example:

char string[64];
scanf("%64s", string);