ARITHMETIC OPERATOR

Introduction

You can process data using arithmetic operators such as +, -, *, \ and the modulus operator %. % indicates the remainder after integer division; % cannot be used for float data type or double data type. If both operands i1 and i2 are integers, the expression i1/i2 provides integer division, even if the target is a floating point variable. The operators have normal precedence rules, as follows:

1. Unary operators such as −, + are evaluated.

2. The multiplication (*) and division (/,%) operators are evaluated.

3. The addition (+) and subtraction (−) operators are evaluated.

4. The assignment operator is evaluated.

5. The expressions are evaluated from left to right for unary operators. The assignment is from right to left.

Program

 #include  main( ) {   int a,b,c,d;   int sum,sub,mul,rem;   float div;    printf("ENTER VALUES OF b, c, d");     scanf("%d%d%d",&b&c,&d);   sum = b+c;   sub = b-c;   mul = b*c;   div = b/c;   rem = b%d;   a = b/c * d;   printf("\n sum = %d, sub = %d, mul = %d, div = %f",sum,sub,mul,div);   printf("\n remainder of division of b & d is %d",rem);   printf("\n a = %d",a);   } 

Input

b = 10, c = 5, d= 3. 

Output

ENTER VALUES OF b, c, d 10 5 3  sum = 15, sub = 5, mul = 50, div = 2.0 remainder of division of b & d is 1 a = 6 

Explanation

1. Suppose you have the expression

   a = b/c * d 

   Here / and * both have the same priority. b/c first is evaluated because the expression is evaluated from left to right.

2. After evaluating the expression b/c * d, the value is assigned to a because the assignment operator has an order of evaluation from right to left, that is, the right expression is evaluated first.