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#include <stdio.h>
void cube(double n);
int main(void)
{
	double number;
	printf("Enter number: ");
	scanf("%Lf", &number);
	cube(number);
	getchar();
	getchar();
	return 0;
}
void cube(double n)
{
	printf("Cube of this number is: %Lf", n * n * n);
}
 

prog.c: In function ‘main’:
prog.c:7:11: error: format ‘%Lf’ expects argument of type ‘long double *’, but argument 2 has type ‘double *’ [-Werror=format=]
  scanf("%Lf", &number);
           ^
prog.c: In function ‘cube’:
prog.c:15:36: error: format ‘%Lf’ expects argument of type ‘long double’, but argument 2 has type ‘double’ [-Werror=format=]
  printf("Cube of this number is: %Lf", n * n * n);
                                    ^
cc1: all warnings being treated as errors

Standard output is empty