C Programming - Declarations and Initializations - Discussion
Discussion Forum : Declarations and Initializations - Find Output of Program (Q.No. 6)
6.
What will be the output of the program?
#include<stdio.h>
int X=40;
int main()
{
int X=20;
printf("%d\n", X);
return 0;
}
Answer: Option
Explanation:
Whenever there is conflict between a local variable and global variable, the local variable gets priority.
Discussion:
21 comments Page 1 of 3.
Shanme said:
9 years ago
Local variable declare only within a main function
Eg:
#include<stdio.h>
//global variable declaration//
main()
{
//local variable declaration//
}
Global varibles are declared outside the function & it is used for entire program, but local variable only used within a main function, so that in execution, compiler first runs the main function, so local variable gets more priority.
Eg:
#include<stdio.h>
//global variable declaration//
main()
{
//local variable declaration//
}
Global varibles are declared outside the function & it is used for entire program, but local variable only used within a main function, so that in execution, compiler first runs the main function, so local variable gets more priority.
Sainath said:
1 decade ago
Variable is said to be a local if it is used in a block in which it is declared.
It's scope is end if the block is end.
Where as global is visible to all blocks of a program.
As it is not declared inside any block.
It's scope is end if the block is end.
Where as global is visible to all blocks of a program.
As it is not declared inside any block.
Raju kumar said:
1 decade ago
Variable is said to be a local if it is used in a block in which it is declared.
It's scope is end if the block is end.
Whereas global is visible to all blocks of a program.
As it is not declared inside any block.
It's scope is end if the block is end.
Whereas global is visible to all blocks of a program.
As it is not declared inside any block.
Shanme said:
9 years ago
@Sunitha.
If you don't understand return, instead u may use void.
int main will return 0, if you use float main then it will return 0.00.....this is the basic concept.
If you don't understand return, instead u may use void.
int main will return 0, if you use float main then it will return 0.00.....this is the basic concept.
Rahul chowdary said:
1 decade ago
Simple if inside the logic block it is local variable.
If outside the logic block it is global variable.
logic block means the block which is in between '{' and '}'.
If outside the logic block it is global variable.
logic block means the block which is in between '{' and '}'.
Surender said:
1 decade ago
ARJUN: answer to your q?
#include<stdio.h>
int X=40;
int main()
{
int X=20;
printf("%d
", X);
return 0;
}
output:X=20
#include<stdio.h>
int X=40;
int main()
{
int X=20;
printf("%d
", X);
return 0;
}
output:X=20
Bhargavi.v said:
1 decade ago
int main()
{
int X=20;
printf("%d
", X);
return 0;
}
// This block which is enclosed in braces is local variable.//
I'm right.
{
int X=20;
printf("%d
", X);
return 0;
}
// This block which is enclosed in braces is local variable.//
I'm right.
Chetan said:
10 years ago
printf("%d",x);//print value of local var i.e 20.
printf("%d",::x)//print value of global var i.e 40.
Try it work.
printf("%d",::x)//print value of global var i.e 40.
Try it work.
Arjun said:
1 decade ago
Above main method can not be declare to any other declaration. How to initilized the int x=40 value. How to get a 20 value please me.
Harish said:
1 decade ago
Exactly how can I access the local and global variable, what is the variables concept?
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