undefined | unit 2 operators

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Unit -2OPERATORS Q1. Explain the arithmetic operators?A1. These are the operators which are useful in performing mathematical calculations. Following are the list of arithmetic operator in C language. To understand the operation assume variable A contains value 10 and variable contains value 5.

Sr. No.	Operator	Description	Example
	+	Used to add two operands	Result of A+B is 15
2.	-	Used to subtract two operands	Result of A-B is 5
3.	*	Used to multiply two operands	Result of A*B is 50
4.	/	Used to divide two operands	Result of A/B is 2
5.	%	Find reminder of the division of two operand	Result of A%B is 0

Example: #include<stdio.h> #include<conio.h> void main() { inta,b,c; clrscr(); printf("Enter two numbers"); scanf("%d %d",&a,&b); printf("\n Result of addition of %d and %d is %d",a,b,a+b); printf("\n Result of subtraction of %d and %d is %d",a,b,a-b); printf("\n Result of multiplication %d and %d is %d",a,b,a*b); printf("\n Result of division of %d and %d is %d",a,b,a/b); printf("\n Result of modulus of %d and %d is %d",a,b,a%b); getch(); } Output: Enter two numbers 5 3 Result of addition of 5 and 3 is 8 Result of subtraction of 5 and 3 is 2 Result of multiplication of 5 and 3 is 15 Result of division of 5 and 3 is 1 Result of modulus of 5 and 3 is 2 Q2. Write a program to add, subtract, multiply and divide two numbers.A2. #include<stdio.h> #include<conio.h> void main() { inta,b,c; clrscr(); printf("Enter two numbers"); scanf("%d %d",&a,&b); printf("\n Result of addition of %d and %d is %d",a,b,a+b); printf("\n Result of subtraction of %d and %d is %d",a,b,a-b); printf("\n Result of multiplication %d and %d is %d",a,b,a*b); printf("\n Result of division of %d and %d is %d",a,b,a/b); printf("\n Result of modulus of %d and %d is %d",a,b,a%b); getch(); } Output: Enter two numbers 5 3 Result of addition of 5 and 3 is 8 Result of subtraction of 5 and 3 is 2 Result of multiplication of 5 and 3 is 15 Result of division of 5 and 3 is 1 Result of modulus of 5 and 3 is 2 Q3. Explain Relational Operators?A3.

Relational operator used to compare two operands. Relational operator produce result in terms of binary values. It returns 1 when the result is true and 0 when result is false. Following are the list of relational operator in C language. To understand the operation assume variable A contains value 10 and variable contains value 5.

Sr. No.	Operator	Description	Example
1.	<	This is less than operator which is used to check whether the value of left operand is less than the value of right operand or not	Result of A<B is false
2.	>	This is greater than operator which is used to check whether the value of left operand is greater than the value of right operand or not	Result of A>B is true
3.	<=	This is less than or equal to operator	Result of A<=B is false
4.	>=	This is greater than or equal to operator	Result of A>=B is true
5.	==	This is equal to operator which is used to check value of both operands are equal or not	Result of A==B is false
6.	!=	This is not equal to operator which is used to check value of both operands are equal or not	Result of A!=B is true

Example: #include<stdio.h> #include<conio.h> void main() { inta,b,c; clrscr(); printf("Enter two numbers"); scanf("%d %d",&a,&b); printf("\n Result of less than operator of %d and %d is %d",a,b,a<b); printf("\n Result of greater than operator of %d and %d is %d",a,b,a>b); printf("\n Result of leass than or equal to operator %d and %d is %d",a,b,a<=b); printf("\n Result of greater than or equal to operator of %d and %d is %d", a,b,a>=b); printf("\n Result of double equal to operator of %d and %d is %d",a,b,a==b); printf("\n Result of not equal to operator of %d and %d is %d",a,b,a!=b); getch(); }Output: Enter two numbers 5 3 Result of less than operator of 5 and 3 is 0 Result of greater than operator of 5 and 3 is 1 Result of less than or equal to operator of 5 and 3 is 0 Result of greater than or equal to operator of 5 and 3 is 1 Result of double equal to operator of 5 and 3 is 0 Result of not equal to operator of 5 and 3 is 1 Q4. Write a program to find the largest of three numbers?A4. #include <stdio.h>void main(){int num1, num2, num3; printf("Enter the values of num1, num2 and num3\n");scanf("%d %d %d", &num1, &num2, &num3);printf("num1 = %d\tnum2 = %d\tnum3 = %d\n", num1, num2, num3); if (num1 > num2) { if (num1 > num3) {printf("num1 is the greatest among three \n"); } else {printf("num3 is the greatest among three \n"); } } else if (num2 > num3)printf("num2 is the greatest among three \n"); elseprintf("num3 is the greatest among three \n");}Input: 6,9,7Output: The greatest among three: 9Q5. Explain logical operators?A5.

Logical operators are used to compare logical values of two operands. Following are the list of logical operator in C language. To understand the operation assume variable A contains value 10 and variable contains value 5.

Sr. No.	Operator	Description	Example
1.	&&	This is logical AND, it returns true when both the values are non zero	Result of (A&&B) is true
2.	\|\|	This is logical OR, it returns true when any of two value is non zero	Result of (A\|\|B) is true
3.	!	This is logical NOT operator, it is used to reverse the logical state of operand	Result of !(A&&B) is false

Example:#include<stdio.h>#include<conio.h>void main(){inta,b,c;clrscr();printf("Enter two numbers");scanf("%d %d",&a,&b);printf("\n Result of logical and operator of %d and %d is %d",a,b,a&&b);printf("\n Result of logical or operator of %d and %d is %d",a,b,a||b);printf("\n Result of logical not operator of %d and and %d is %d",a,b,!(a&&b));getch();}Output:Enter two numbers53Result of logical and operator of 5 and 3 is 1Result of logical or operator of 5 and 3 is 1Result of logical not operator of 5 and 3 is 0 Q6. Write a program to show that the sum of two numbers is positive or negative?A6. #include<stdio.h>int main(){ int x=0,y=0,result=0; printf("enter first number:"); scanf("%d",&x); printf("enter second number:"); scanf("%d",&y); result=x+y; printf("sum of 2 numbers:%d ",result); if(result >0)printf(“ The number is positive”);else printf(“The number is negative”);getch();} Q7. Explain increment and decrement operators? A7.

These operator are used to increase or decrease the value of variable by one. Following are the list of logical operator in C language. To understand the operation assume variable A contains value 10.

Sr. No.	Operator	Description	Example
1.	++	This is incremental operator which is used to increase the value of variable by 1	Result of (A++) is value of A is 11
2.	--	This is decremental operator which is used to decrease the value of variable by 1	Result of (A--) is value of A is 9

Example:#include<stdio.h>#include<conio.h>void main(){int a=5,b=5,c=5,d=5;clrscr();printf("Original value of a, b, c, d is %d \t %d \t %d \t %d",a,b,c,d);a++;printf("\n New value of a is %d",a); ++b;printf("\n New value of b is %d",b);printf("\n New value of c is %d",c++);printf("\n New value of d is %d",++d);getch();}Output:Original value of a, b, c, d is 5 5 5 5New value of a is 6New value of b is 6New value of c is 5New value of d is 6Q8. Write a program to display increment and decrement operators?A8. #include<stdio.h>#include<conio.h>void main(){int a=5,b=5,c=5,d=5;clrscr();printf("Original value of a, b, c, d is %d \t %d \t %d \t %d",a,b,c,d);a++;printf("\n New value of a is %d",a); ++b;printf("\n New value of b is %d",b);printf("\n New value of c is %d",c++);printf("\n New value of d is %d",++d);getch();}Output:Original value of a, b, c, d is 5 5 5 5New value of a is 6New value of b is 6New value of c is 5New value of d is 6Q9. Explain bitwise operators?A9.

:These operators are used to work on the each bits of data. These operators can work on the binary data. If the data is non binary then computer first of all convert it into binary form and then perform the operation. Following are the list of logical operator in C language. To understand the operation assume variable A contains value 10 and variable contains value 5. So the binary values of

A = 0000 1010 and B = 0000 0101

Sr. No.	Operator	Description	Example
1.	&	This is bitwise AND	Result of (A&B) is 0000 0000
2.	\|	This is bitwise OR	Result of (A\|B) is 0000 1111
3.	^	This is bitwise Exclusive	Result of (A^B) is 0000 1111
4.	<<	This is used to shift bit on left side	Result of (A<<B) is
5.	>>	This is used to shift bit on right side	Result of (A>>B) is

Example:#include<stdio.h>#include<conio.h>void main(){inta,b,c;clrscr();printf("Enter two numbers");scanf("%d %d",&a,&b);printf("\n Result of bitwise and operator of %d and %d is %d",a,b,a&b);printf("\n Result of bitwise or operator of %d and %d is %d",a,b,a|b);printf("\n Result of bitwise exclusive operator of %d and %d is %d",a,b,a^b);printf("\n Result of bitwise left shift operator of %d and %d is %d",a,b,a<<b);printf("\n Result of bitwise right shift operator of %d and %d is %d",a,b,a>>b);getch();}Output:Enter two numbers53Result of bitwise and operator of 5 and 3 is 1Result of bitwise or operator of 5 and 3 is 7Result of bitwise exclusive operator of 5 and 3 is 6Result of bitwise left shift operator of 5 and 3 is 40Result of bitwise right shift operator of 5 and 3 is 0 Q10. Explain precedence of operations?A10. Expression may have one or more operators in it. If expression has multiple operators then these operators are solved according to hierarchy of operators. Hierarchy determines the order in which these operators are executed. Table : Hierarchy of operators

Functions	Top Priority
Power
Mod
*,/
+,-
=,<,>,<=,>=
NOT
AND
OR	Least Priority

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