These functions allow you to work with variables as if they were arrays of bits.

• bool getbit(int a, int i) – returns bit a[i]
• void setbit(int a, int i) – performs a[i] = 1
• void clrbit(int a, int i) – performs a[i] = 0
• void tglbit(int a, int i) – performs a[i] = !a[i]