INT64_MIN --Constant representing the minimum value of int64_t

INT64_MIN is a constant that represents the minimum value of int64_t --signed 64-bit integer type. It can be used by including the " stdint.h" header. This is the constant macro introduced in C99.

#include <stdio.h>
#include <stdint.h>

int main (void) {
  printf("%lld", INT64_MIN);
}

The value of INT64_MIN.

-9223372036854775808

I am using "%lld" in the format specifier of the printf function.

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