Special Operators in C Language

Special Operators in C Language:

• Below are some of special operators that C language offers.

S.no	Operators	Description
1	&	This is used to get the address of the variable. Example : &a will give address of a.
2	*	This is used as pointer to a variable. Example : * a  where, * is pointer to the variable a.
3	Sizeof ()	This gives the size of the variable. Example : size of (char) will give us 1.

Example program for & and * operators in C language:

• In this program, “&” symbol is used to get the address of the variable and “*” symbol is used to get the value of the variable that the pointer is pointing to. Please refer C – pointer topic to know more about pointers.

C

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#include <stdio.h> int main() {         int *ptr, q;         q = 50;           /* address of q is assigned to ptr       */         ptr = &q;             /* display q's value using ptr variable */               printf("%d", *ptr);         return 0; }

Output:

50

Example program for sizeof() operator in C language:

• sizeof() operator is used to find the memory space allocated for each C data types.

C

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#include <stdio.h> #include <limits.h> int main() {    int a;    char b;    float c;    double d;    printf("Storage size for int data type:%d \n",sizeof(a));    printf("Storage size for char data type:%d \n",sizeof(b));    printf("Storage size for float data type:%d \n",sizeof(c));    printf("Storage size for double data type:%d\n",sizeof(d));    return 0; }

Output:

Storage size for int data type:4 Storage size for char data type:1 Storage size for float data type:4 Storage size for double data type:8

 Summary of C language operators types:

S.no	Types of Operators	Description
1	Arithmetic_operators	These are used to perform mathematical calculations like addition, subtraction, multiplication, division and modulus
2	Assignment operators	These are used to assign the values for the variables in C programs.
3	Relational operators	These operators are used to compare the value of two variables.
4	Logical operators	These operators are used to perform logical operations on the given two variables.
5	Bit wise operators	These operators are used to perform bit operations on given two variables.
6	Conditional(ternary) operators	Conditional operators return one value if condition is true and returns another value is condition is false.
7	Increment/decrement operators	These operators are used to either increase or decrease the value of the variable by one.
8	Special operators	&, *, sizeof( ) and ternary operators

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