Programming Example
Write a program that illustrates the scope rules in blocks.
Write a program that illustrates the scope rules in blocks.
#include <stdio.h>
int main()
{
int x= 3; /* variable declaration in outer block */
printf("\n in outer block x = %d before executing inner block ", x);
{
int x= 45; /* variable declaration in inner block */
printf("\n in inner block x = %d", x);
}
printf("\n in outer block x = %d after executing inner block ", x);
return 0;
}
in outer block x = 3 before executing inner block
in inner block x = 45
in outer block x = 3 after executing inner block
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.