Uploaded April 2025 | Updated September 2026, 2 weeks ago

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#coding #programming #cprogramming

void birthday(int* age);

int main() {

// pointer = A variable that stores the memory address of another variable.
// Benefit: They help avoid wasting memory by allowing you to pass
// the address of a large data structure instead of copying the entire data.

int age = 25;
int *pAge = &age;

birthday(pAge);

printf("You are %d years old", age);

return 0;
}
void birthday(int* age){
// pass by reference
(*age)++;
}