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Write a C program to demonstrate post increment and pre increment operators
Increment operator (++)
It is used to increment the value of a variable by 1. There are two types of increment operators, pre-increment and post-increment.
The increment operator is placed before the operand in pre-increment and the value is first incremented and then the operation is performed on it.
For example,
z = ++a; a= a+1 z=a
The increment operator is placed after the operand in post-increment and the value is incremented after the operation is performed.
For example,
z = a++; z=a a= a+1
Example 1
Following is an example for pre-increment operator −
main ( ){
int A= 10, Z;
Z= ++A;
printf ("Z= %d", Z);
printf (" A=%d", A);
}Output
Z =11 A=11
Example 2
Following is an example for post-increment operator −
main ( ){
int a= 10, z;
z= a++;
printf ("Z= %d", z);
printf ("A=%d", a);
}Output
Z=10 A=11
Decrement operator (- -)
It is used to decrement the values of a variable by 1. There are two types of increment operators, pre decrement and post decrement.
The decrement operator is placed before the operand in pre decrement and the value is first decremented and then the operation is performed on it.
For example,
z = - - a; a= a-1 z=a
The decrement operator is placed after the operand in post decrement and the value is decremented after the operation is performed
For example,
z = a--; z=a a= a-1
Example 1
Following is an example for pre decrement operator −
main ( ){
int a= 10, z;
z= --a;
printf ("Z= %d", z);
printf (" A=%d", a);
}Output
Z=9 A=9
Example 2
Following is an example for post decrement operator −
main ( ){
int a= 10, z;
z= a--;
printf ("Z= %d", z);
printf ("A=%d", a);
}Output
Z=10 A=9
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