why pointers

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In the snippet that you have provided, it doesn't matter which one you use to access the value of j. The real difference becomes obvious when, for example, the access to the same variable is desirable from another code block (scope). ~example~ void f(int *p2j) { // compilation error - j is undefined identifier. cout << j; // just indirect access to variable j is possible cout << *p2j; // 10 } int main() { int j = 10; f(&j); }