Submission #1558490

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Source Code Expand

#include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(false)
using namespace std;
#define inf (0x3f3f3f3f)
typedef long long int LL;
const int maxn = 1e5 + 20;
int a[maxn];
void work() {
    int n;
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &a[i]);
    }
    int ans = 0;
    for (int i = 1; i <= n - 1; ++i) {
        if (a[i] == i) {
            swap(a[i], a[i + 1]);
            ans++;
        }
    }
    cout << ans << endl;
}

int main() {
#ifdef local
    freopen("data.txt", "r", stdin);
//    freopen("data.txt", "w", stdout);
#endif
    work();
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘void work()’:
./Main.cpp:12:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &a[i]);
                           ^

Judge Result