Why C Programming Input / Output? In this section you can learn and practice C Programming Questions based on 'Input / Output' and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence. 'Input' is information supplied to a computer or program. 'Output' is information provided by a computer or program. Frequently, computer programmers will lump the discussion in the more general term input/output or simply, I/O. In C, there are many different ways for a program to communicate with the user.
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When you take time to consider it, a computer would be pretty useless without some way to talk to the people who use it. Just like we need information in order to accomplish tasks, so do computers. And just as we supply information to others so that they can do tasks, so do computers.
These supplies and returns of information to a computer are called input and output. 'Input' is information supplied to a computer or program. 'Output' is information provided by a computer or program. Frequently, computer programmers will lump the discussion in the more general term input/output or simply, I/O.
In C, there are many different ways for a program to communicate with the user. Amazingly, the most simple methods usually taught to beginning programmers may also be the most powerful. In the Hello, World! example at the beginning of this text, we were introduced to a Standard Library file
stdio.h , and one of its functions, printf() . Here we discuss more of the functions that stdio.h gives us.
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