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/* example of sizeof operator */
printf("Line 1 - Size of variable a = %d\n", sizeof(a) );

printf("Line 2 - Size of variable b = %d\n", sizeof(b) );
printf("Line 3 - Size of variable c= %d\n", sizeof(c) );

/* example of & and * operators */

ptr = &a; /* 'ptr' now contains the address of 'a'*/
printf("value of a is %d\n", a);
printf("*ptr is %d.\n", *ptr);

/* example of ternary operator */
a = 10;
b = (a == 1) ? 20: 30;

printf( "Value of b is %d\n", b );

b = (a == 10) ? 20: 30;
printf( "Value of b is %d\n", b );

}

When you compile and execute the above program, it produces the following result:

value
of a s
*ptr
is 4.
Valu
e of b s 0
Valu
e of b s 0

Operators Precedence in C
Operator precedence determines the grouping of terms in an expression and decides how
an expression is evaluated. Certain operators have higher precedence than others; for example, the
multiplication operator has a higher precedence than the addition operator.
For example, x = 7 + 3 * 2; here, x is assigned 13, not 20 because operator * has a higher
precedence than +, so it first gets multiplied with 3*2 and then adds into 7.

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