Why does this recursive function report an error?

main

Part of this answer references GPT, GPT_Pro to solve the problem better.
This error occurs when compiling Fibonacci and causes the program to fail to compile. The possible cause is:

1. In line 9, the %d in the printf formatting string does not match the variable t and should be changed to printf("%d", t); Fibonacci(int n)
2. Extra space after int in line 11 should be changed to int Fibonacci(int n)
3. Extra space after int in line 14 should be changed to int t;
4. The t in line 17 should be changed to tt, i.e. return tt;

The correct code is as follows:

#include 
 
int Fibonacci(int);
 
int main() {
    int t;
    scanf("%d", &t);
    t = Fibonacci(t);
    printf("%d", t);
    return 0;
}
 
int Fibonacci(int n) {
    int tt;
    if (n == 0) tt = 0;
    else if (n == 1) tt = 1;
    else if (n >= 2) tt = Fibonacci(n-1) + Fibonacci(n-2);
    return tt;
}

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main error, you have mian