Hui Guys can anyone Explain the pointer concept in c?

Variable is nothing but a name given to a specific memory location where we store some value

A Pointer is also a special variable in which we store the address of a memory location

int x; // hereb 'x' is a name given to some memory location (for eg. 6644)
int *p; // A pointer variable which can hold the address of an integer
x = 10 // storing the value '10' in memory(6644) via the name 'x'
p = &x// storing the address of 'x' in 'p' (ie., p = 6644)
*p = 20 // storing 20 in the address 6644 via p, a pointer to the address

& - address of
* - value at

p = &x // ie., p holds the 'address of' 'x'
*p = 20 // 'value at' address 'p'(6644) is 20

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