Discussion on memset assignment

memset assignment
As far as possible with 0x3f3f3f3f assignment , such memset Assignment result and “=” The effect of assignment number is the same , There will be no mismatches .
0x7fffffff Empathy （7 individual f）

This is the running code
You can see that for memset, These four methods are equivalent .

#include <bits/stdc++.h>
using namespace std;
int a[100];
int main()
{
    
    memset(a, 0x3f, sizeof(a));
    cout << a[0] << endl;
    memset(a, 0x3f3f, sizeof(a));
    cout << a[0] << endl;
    memset(a, 0x3f3f3f, sizeof(a));
    cout << a[0] << endl;
    memset(a, 0x3f3f3f3f, sizeof(a));
    cout << a[0] << endl;

    cout << 0x3f << endl;
    cout << 0x3f3f << endl;
    cout << 0x3f3f3f << endl;
    cout << 0x3f3f3f3f << endl;
    return 0;
}

Running results ：

1061109567
1061109567
1061109567
1061109567
63
16191
4144959
1061109567