C pointers explained

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C pointers tutorial example explained

#C #pointers #tutorial

void printAge(int *pAge)
{
printf("You are %d years old\n", *pAge); //dereference
}

int main()
{
// pointer = a "variable-like" reference that holds a memory address to another variable, array, etc.
// some tasks are performed more easily with pointers
// * = indirection operator (value at address)

int age = 21;
int *pAge = &age;

printAge(pAge);

//printf("address of age: %p\n", &age);
//printf("value of pAge: %p\n", pAge);
//printf("size of age: %d bytes\n", sizeof(age));
//printf("size of pAge: %d bytes\n", sizeof(pAge));
//printf("value of age: %d\n", age);
//printf("value at stored address: %d\n", *pAge); //dereferencing

return 0;
}
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