What is the output of printf("%d")?
1. When we write printf("%d",x); this means compiler
will print the value of x. But as here, there is
after "%d", so compiler will show in output window
2. When we use %d the compiler internally uses it to access the argument in the stack (argument stack). Ideally compiler determines the offset of the data variable depending on the format specification string. Now when we write printf("%d",a) then compiler first accesses the top most element in the argument stack of the printf which is %d and depending on the format string it calculated to offset to the actual data variable in the memory which is to be printed. Now when only %d will be present in the printf then compiler will calculte the correct offset (which will be the offset to access the integer varible) but as the actual data objet is to be printed is not present at that memory location so it will print what ever will be the contents of that memory location.
3. Some compilers check the format string and will generate an error without the proper number and type of arguments for things like printf(...) and scanf(...).
2007-02-26, 7048👍, 0💬
How To Retrieve Input Values for Checkboxes Properly? - PHP Script Tips - Processing Web Forms If mu...
How To Write a Minimum Atom 1.0 Feed File? - RSS FAQs - Atom Feed Introduction and File Generation I...
What is the difference between Class and structure’s ? Following are the key differences between the...
How To Manage Transaction Isolation Level? - Oracle DBA FAQ - Introduction to PL/SQL Transaction iso...
What metrics will you look at in order to see the project is moving successfully? Most metric sets d...