Presentation on "C operators"

1. Operators in c programming
Name : Krishna kumar Pankaj
Roll No : 13/IT/22

2. What is Operators ?
 An operator is a symbol that is used to perform certain mathematical or
logical operations.
 Operator is used to manipulate data and variables.

3. Types of operators
 In C programming Operators classified in to various categories
 1. Arithmetic operators
 2. Relational operators
 3. Logical operators
 4. Assignment operators
 5. Increment & Decrement operators
 6. Conditional operators
 7. Bitwise operators
 8. Special operators

4. Arithmetic operators
 Arithmetic operators used to perform Arithmetic operations.
 There are following Arithmetic operators in c language

5. Example :
 #include<stdio.h>
#include<conio.h>
int main()
{
int x=25;
int y=5;
printf("%d+%d=%dn",x,y,x+y);
printf("%d-%d=%dn",x,y,x-y);
printf("%d*%d=%dn",x,y,x*y);
printf("%d/%d=%dn",x,y,x/y);
getch();
}
 Output :
25+5=30
25-5=20
25*5=125
25/5=5

6. Relational operators
 Relational operators compare between two operands and return in terms of
true or false
 There are following Relational operators.

7. Example :
#include<conio.h>
#include<stdio.h>
int main()
{
int a, b;
printf("Enter values for a and b : ");
scanf("%d%d",&a,&b);
printf("n The < value of a is %d", a<b);
printf("n The <= value of a is %d", a<=b);
printf("n The > value of a is %d", a>b);
printf("n The >= value of a is %d", a>=b);
printf("n The == value of a is %d", a==b);
printf("n The != value of a is %d", a!=b);
getch();
 }

8. Logical operator
 A Logical operator is used to compare or evaluate logical or relational
operations.
 There are following logical operators

9. Example :
#include<stdio.h>
#include<conio.h>
int main()
{
int a, b;
printf("Enter values for a and b : ");
scanf("%d%d", &a, &b);
printf("n %d",(a<b)&&(a!=b));
printf("n %d",(a<b)||(b<a));
printf("n %d",!(a==b));
getch();
}

10. Assignment operator
 An Assignment operator is used to assign a constant or a value of one
variable to another.
 = is an Assignment operator.
 you can use the assignment for multiple assignment as follows:
 x=y=z=20;

11. Increment Operator(++)
 Increment operator are increase the value of subsequent
 Increment operator are two types as follows:
• post Increment
• Ex : x=5;x++;x=5
• pre Increment
• x=5;++x;x=6

12. Decrement operator(--)
 Decrement operator Decrease the value to one ,two and so on.
 Decrement operator are also two type as
• Post Decrement
• x=5;x--;x=5
• pre decrement
• x=5;--x;x=4

13. Example of Increment & Decrement
operator
#include<stdio.h>
#include<conio.h>
int main()
{
int a,b,c;
printf("Enter the values for a and b :");
scanf("%d%d", &a, &b);
printf("n The value of c is %d", c=++a);
printf("n The value of c is %d", c=a++);
printf("n The value of c is %d", c=--b);
printf("n The value of c is %d", c=b--);
}
 Output
Enter the value of a and b : 3 ,7
The value of c is 4
The value of c is 4
The value of c is 6
The value of c is 6

14. Conditional operator
 They are also called as ternary operator.
 They are also called as ?: operator.
 Ternary operator Takes on 3 Argument
Where
1) Expression 1 is condition
2) Expression2 is Statement Followed if Condition is True
3) Expression2 is Statement Followed if Condition is False
True
Condition ? Block 1 : Block 2
False

15. Example :
#include<stdio.h>
void main()
{
int a, b, x;
printf("Enter the values of a add b : ");
scanf("%d %d", &a, &b);
x=(a>b)?a:b;
printf("Biggest Value is :%d",x);
}

16. Bitwise Operator
 One of the C powerful Features is a set of bit manipulation operators
 There are various Bitwise Operators in C as following Table.
1. & (bitwise AND) Takes two numbers as operand and does AND on every bit of
two numbers. The result of AND is 1 only if both bits are 1.
2. | (bitwise OR) Takes two numbers as operand and does OR on every bit of two
numbers. The result of OR is 1 any of the two bits is 1.
3. ^ (bitwise XOR) Takes two numbers as operand and does XOR on every bit of
two numbers. The result of XOR is 1 if the two bits are different.
4. << (left shift) Takes two numbers, left shifts the bits of first operand, the
second operand decides the number of places to shift.
5. >> (right shift) Takes two numbers, right shifts the bits of first operand, the
second operand decides the number of places to shift.
6. ~ (bitwise NOT) Takes one number and inverts all bits of it

17. Special Operator
 There are many special operators use in c programming.
 Comma operator
 Sizeof Operator

18. Comma Operator
 Evaluate of comma operator – Left to Right
 Uses of comma operator as following :
 Multiples Declaration
 Multiples Initialization
 Multiples Variation
 Multiples Statement
 Example of comma operator
 X=12,y=10,z=18
 For( i=0,j=0;i<5,j<5;i++,j++ )

19. Sizeof operator
 Sizeof operator calculate the size of data
 i.e: How many bit a specific data having.
 Syntax of sizeof operator:
 Sizeof(variable);
Example :
sizeof(a), where a is interger, will return 4

20. Thank you
Any Queries ???
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Email me at “Krishna.pankaj@hotmail.com”