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C - Function Declaration

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Function Declaration

return_type function_name(arg_type arg_name, …);

where,

return_type is the type of data that the function returns. If the function doesn’t return any data, then a data type of void should be specified.
function_name is the name of the function itself.
arg_type is the data type that function accepts. If the function doesn’t take any parameters, a data type of void should be specified.
arg_name is the variable name of the argument.