Computer Programming

Explain about preprocessor directive in C. Can we say that an instruction and a statement in C are same in C programming. Count the number of statements in the following code with explanations.

int a[3][3]={1,2,3,
4,5,6,
7,8,9};
int n = 5678;
printf("n = %d",n); printf("\n n = %6d",n);
printf("\n n = %2d",n);