cmdlets not recognized on the first run in powershell - function

Question

I am facing an issue with the first run of powershell code.
cmdlets and user defined function are not recognized in the first run but works fine if I run the code again
user defined function takes values from previous run.i.e. basically we need to run the code twice to get the correct result
Code:
$resultVar=get-CPUAndMemUtilization -computername $computername -CPUCriteria $CPUCriteria -MemCriteria $MemCriteria
#Write-Host "Mme:"$resultVar;
$CPUMem += [PSCustomObject] #{
CPULoad = "$($resultVar[0])"
MemLoad = "$($resultVar[1])"
}
Write-Host $CPUMem;
function get-CPUAndMemUtilization($computername,$CPUCriteria,$MemCriteria)
{
$Memstatus=$null;
$CPUstatus=$null;
$AVGProc = Get-WmiObject -computername $computername win32_processor | Measure-Object -property LoadPercentage -Average | Select Average
$OS = gwmi -Class win32_operatingsystem -computername $computername |
Select-Object #{Name = "MemoryUsage"; Expression = {“{0:N2}” -f ((($_.TotalVisibleMemorySize - $_.FreePhysicalMemory)*100)/ $_.TotalVisibleMemorySize) }}
$result += [PSCustomObject] #{
ServerName = "$computername"
CPULoad = "$($AVGProc.Average)%"
MemLoad = "$($OS.MemoryUsage)%"
}
if($AVGProc.Average -lt $CPUCriteria)
{
$Memstatus=1;
}else{
$Memstatus=0;
}
if($OS.MemoryUsage -lt $MemCriteria)
{
$CPUstatus=1;
}else{
$CPUstatus=0;
}
$CPUstatus
$Memstatus
return;
}
Code return the System CPU & Me usage of the system in CPU & Mem utilization for a system
Error:
get-CPUAndMemUtilization : The term 'get-CPUAndMemUtilization' is not
recognized as the name of a cmdlet, function, script file, or operable
program. Check the spelling of the name, or if a path was included,
verify that the path is correct and try again.

Answer 1

You call the function before you import it (so it doesn't exist) into the powershell session, just swap those 2 things:
function get-CPUAndMemUtilization($computername,$CPUCriteria,$MemCriteria)
{
...
}
$resultVar=get-CPUAndMemUtilization -computername $computername -CPUCriteria $CPUCriteria -MemCriteria $MemCriteria
#Write-Host "Mme:"$resultVar;
$CPUMem += [PSCustomObject] #{
CPULoad = "$($resultVar[0])"
MemLoad = "$($resultVar[1])"
}
Write-Host $CPUMem;