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Special Operators in C:
Below are some of the special operators that the C programming language offers.
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Operators
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Description
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&
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This is used to get the address of the variable.
Example : &a will give address of a.
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*
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This is used as pointer to a variable.
Example : * a where, * is pointer to the variable a.
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Sizeof ()
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This gives the size of the variable.
Example : size of (char) will give us 1.
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Example program for & and * operators in C:
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.
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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:
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50
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Example program for sizeof() operator in C:
sizeof() operator is used to find the memory space allocated for each C data types.
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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:
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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 |
Continue on types of C operators:
Click on each operator name below for detailed description and example programs.
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Types of Operators
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Description
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| Arithmetic_operators | These are used to perform mathematical calculations like addition, subtraction, multiplication, division and modulus |
| Assignment_operators | These are used to assign the values for the variables in C programs. |
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These operators are used to compare the value of two variables.
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These operators are used to perform logical operations on the given two variables.
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These operators are used to perform bit operations on given two variables.
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Conditional operators return one value if condition is true and returns another value is condition is false.
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These operators are used to either increase or decrease the value of the variable by one.
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&, *, sizeof( ) and ternary operators.
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