script.txt

# Script Variables
$fileLocation = "c:\software\"
$installer = "vc_redist.x64.exe"
$software = "Microsoft Visual C++"
$arguments = "/install /quiet /norestart /VerySilent"

# Check if the software is already installed.
$installed = (`
Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | `
where { $_.DisplayName -like "$software*" }) -ne $null

if($installed) 
{
	Write-Host "'$software' is already installed."
}
else 
{
# install software.
	Write-Host "Running the '$software' installer..."
    Start-Process -FilePath "$fileLocation$installer" `
    -ArgumentList "$arguments" -Wait
    
# Confirm the software was installed.
    $installed = (`
    Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | `
    where { $_.DisplayName -like "$software*" }) -ne $null
    
    if($installed) 
    {
    	Write-Host "'$software' was successfully installed."
    }
    else 
    {
    	Write-Error "'$software' was not installed."
    }
}