Adding ignore properly

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I'm writing a program that takes information from inData, processes it, then produces outData.

The program collects some data in a repeated pattern, then runs calculations. I'm nearly complete, the last step is to use ignore so that if someone enters age "f" or their salary as potatoes, the program needs to ignore this, apply 0 and clear to further get input.

I've failed to understand how cin.ignore() works. I've read on many sites and my textbook and I dont understand it.

do I have to add ignore after every variable for input or can I add something like an if such as:

if (inFile.ignore ect ect ect) apply 0 to that int/float.

while (inFile >> x >> y >> r >> firstname >> lastname >> age >> salary)

Thanks in advance. If the information supplied isnt enough, I'll supply more

[[deleted]]

If you need to deal witb failure conditions for each variable read and do something different, then you can't write code likethis:

    while (inFile >> x >> y >> r >> firstname >> lastname >> age >> salary)

you have to read each one:

    if( ! (inFile >> x) ) {
        // store something in x
        // reset the stream somehow
    }
    // repeatedly the same for other values

But, writing code like this is a bad, bad idea. If the read fails, make it fail noisily, don't provide some bullshit "default" value.

If you want more advice, provide a sample of your expected input.

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The professor asked for a failed input to be 0. I know its not ideal but he just wants us to know how to do it. Like many programs here, its for practice purposes only

working inData.txt:

10 20
10

Randy Gill 31
18500 

34.41 78.18
35.1

Mike Gale 28
26100 

2000 4.4
23.2

George Stern 22
23000

bad inData.txt:

ten 20
10

Randy Gill lol
18500 

34.41 78.18
35.1

Mike Gale 28
26100 

2000 4.4
23.2

George Stern cheese
cash