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How do we initialize a variable in C++?
You can initialize a variable using the assignment operator or use its constructor when initializing it. For example,
int i = 0; MyClass instance(1, "Hello");
It will be automatically initialized if
- It's a class/struct instance in which the default constructor initializes all primitive types; like MyClass instance;
- You use array initializer syntax, e.g. int a[10] = {} (all zeroed) or int a[10] = {1,2}; (all zeroed except the first two items: a[0] == 1 and a[1] == 2)
- It is a global/extern variable
- It is defined static
Updated on 11-Feb-2020 07:54:11
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