pingpong/.vscode/settings.json

{
    "files.associations": {
        "unistd.h": "c",
        "stdio.h": "c",
        "in.h": "c",
        "time.h": "c",
        "signal.h": "c",
        "string.h": "c",
        "stdlib.h": "c",
        "inet.h": "c",
        "un.h": "c"
    }
}