题解 | #统计每个月兔子的总数#

#include <stdio.h>

int main() {
    int a=0, b=2;
    scanf("%d",&a);
    int num1 = 1,num2 = 1,num3 = 0;
    if(a<=2)
    {
        printf("%d",num1);
    }
    else {
        while(b<a)
        {
            num3 = num1+num2;
            num1 = num2;
            num2 = num3;
            b++;
        }
        printf("%d",num3);
    
    }
    return 0;
}