编辑代码

#include<stdio.h>
int TAIJIE(int A)
{
	if (A == 2 || A == 1)
		return A;
    else
        return TAIJIE(A-1) + TAIJIE(A-2);
}
 
int main()
{
    int A ;
    scanf("%d", &A); 
    printf("%d", TAIJIE(A)); 
}