Submission #2201188

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Source Code Expand

#include<stdio.h>
int main()
{
    int n;
    scanf("%d", &n);
    int a[3] = { 0,0,1 }, x;
    int i;
    if (n <= 3)
    {
        printf("%d\n", a[n - 1]);
        return 0;
    }
    for (i = 4; i <= n; i++)
    {
        x = a[0] + a[1] + a[2];
        a[0] = a[1];
        a[1] = a[2];
        a[2] = x;
    }
    printf("%d\n", a[2]);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:5:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ^

Judge Result