There are five main arithmetic operators in ‘C’. They are ‘+’ for additions,‘-' for subtraction, ‘*’ for multiplication, ‘/’ for division.

Operands can be integer quantities, floating-point quantities or characters.

The division operator (/) requires that the second operand be nonzero.

If division operation is carried out with two floating- point numbers, or with one floating point number. & one integer, the result will be a floating-point quotient.

If we take two variables say x and y and their values are 20 and 10

respectively, and apply operators like addition, subtraction, division,

multiplication and modulus on them then their resulted values will

be as follows:

x+y=30

x-y=10

x*y=200

x/y=2

If one or both operands represent negative values, then the addition, subtraction, multiplication and division operations will result in values whose signs are determined by the usual rules of algebra.

Operands can be integer quantities, floating-point quantities or characters.

The division operator (/) requires that the second operand be nonzero.

If division operation is carried out with two floating- point numbers, or with one floating point number. & one integer, the result will be a floating-point quotient.

If we take two variables say x and y and their values are 20 and 10

respectively, and apply operators like addition, subtraction, division,

multiplication and modulus on them then their resulted values will

be as follows:

x+y=30

x-y=10

x*y=200

x/y=2

If one or both operands represent negative values, then the addition, subtraction, multiplication and division operations will result in values whose signs are determined by the usual rules of algebra.

- If one operand is a floating point type and the other is a char or an int, the char/int will be converted to the floating point type of the other operand and the result will be expressed as such.So, an operation between an int and a double will result in double.
- If both operands are floating-point types with different precisions, the lower-precision operand will be converted to the precision of the other operand and the result will be expressed in this higher precision.

- Float & double -->double
- Float & long double -->long double
- Double & long double -->long double

- If neither operand is a floating point type or a long int, then both operands will be converted to int & the result will be int.
- If neither operand is a floating point type but one is a long int,the other will be converted to long int & the result will be long int.

The operator within C are grouped hierarchically according to their order of evaluation known as

**precedence**.
Arithmetic operators *,/ and % are under one precedence group and +,- are under another precedence group. The operators *, / and % have higher precedence than + and -.

**Example**

main()

{

int a,b,c;

int a,b,c;

a=10;

b=20;

c=a+b;

printf("%d",c);

c=x-y;

printf("%d",c);

c=x*y;

printf("%d",c);

c=x/y;

printf("%d",c);

}

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