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Description
Subtraction is one of the four primary arithmetic operations. The operator - (minus) operates on two operands to produce the difference of the second from the first.
Syntax
difference = operand1 - operand2;
Parameter Values
- difference: variable. Allowed data types: int, float, double, byte, short, long.
- operand1: variable or constant. Allowed data types: int, float, double, byte, short, long.
- operand2: variable or constant. Allowed data types: int, float, double, byte, short, long.
Example Code
int a = 5;
int b = 10;
int c = 0;
c = a - b; // the variable 'c' gets a value of -5 after this statement is executed
※ NOTES AND WARNINGS:
- The subtraction operation can overflow if the result is smaller than that which can be stored in the data type (e.g. subtracting 1 from an integer with the value -32,768 gives 32,767).
- If one of the numbers (operands) are of the type float or of type double, floating point math will be used for the calculation.
- If the operands are of float / double data type and the variable that stores the difference is an integer, then only the integral part is stored and the fractional part of the number is lost.
float a = 5.5;
float b = 6.6;
int c = 0;
c = a - b; // the variable 'c' stores a value of -1 only as opposed to the expected difference of -1.1
See Also
- Language : + (addition)
- Language : = (assignment operator)
- Language : / (division)
- Language : * (multiplication)
- Language : % (remainder)
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