What happens when a variable is not initialized in main function?

When a variable is not initialized in main function it contains garbage value. This can be well seen from the example below

int x;
z= sample()

printf(“Testing program”);

Output is


Testing program

The above program prints a garbage value and the output testing program. This is because the variable x is not initialized and so the variable x had garbage value which is printed first then the function sample is called which gave output as testing program. Thus it is essential to initialize variables in main () function.

Editorial Team at Geekinterview is a team of HR and Career Advice members led by Chandra Vennapoosa.

Editorial Team – who has written posts on Online Learning.

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