The subtraction operator (-) subtracts the second operand from the first. Both operands can be either integral or floating types, or one operand can be a pointer and the other an integer.
For more information, see logical-NOT, addition, and one's complement.
Example
In the following example, integer nNumB is subtracted from integer nNumA giving result nNumC:
// Example of the subtraction operator
int nNumA=8, nNumB=2, nNumC;
nNumC = nNumA - nNumB; // nNumC is now 6