#include<stdio.h>
int main(){
int
EOF=12;
printf("%d",EOF);
return
0;
}
Compilation error
Explanation: Variable name cannot be pre defined function of
included header file.
Wednesday, 13 March 2013
printf as Variable name
#include<stdio.h>
int main(){
int
printf=12;
printf("%d",printf);
return
0;
}
Compilation error
Explanation: Variable name cannot be pre defined function of
included header file.
Different variable scope 3
#include<stdio.h>
int main(){
struct
a{
int
a;
};
struct
a b={10};
printf("%d",b.a);
return
0;
}
output: 10
Explanation: Two variables can have
same name in different scope.
main as variable Name
#include<stdio.h>
int main(){
int
main = 80;
printf("%d",main);
return
0;
}
80
Explanation:
Variable name can be
main.
Different variable scope 2
#include<stdio.h>
int main(){
int
xyz=20;{
int
xyz=40;
}
printf("%d",xyz);
return
0;
}
20
Explanation:
different variable scope
#include<stdio.h>
int xyz=10;
int main(){
int
xyz=20;
printf("%d",xyz);
return
0;
}
output: 20
Explanation: Two variables can have
same name in different scope.
Global Variable same name 3
#include<stdio.h>
static num;
int main(){
printf("%d",num);
return
0;
}
int num =25;
output: 25
Explanation:
Two or more global variables can have same name
but we can initialize only one of them.
Simple struct code
void main()
{
struct india
{
char c;
float d;
};
struct world
{
int a[3];
char b;
struct india orissa;
};
struct world st ={{1,2,3},'P','q',1.4};
clrscr();
printf("%d\t%c\t%c\t%f",st.a[1],st.b,st.orissa.c,st.orissa.d);
getch();
}
Global Variables same name 2
#include<stdio.h>
static num=5;
extern int num;
int main()
{
printf("%d",num);
return
0;
}
int num =25;
Compilation error
Explanation:
Two or more global variables can have same name
but we can initialize only one of them.
Global variables with same name
#include<stdio.h>
static num=5;
int num;
extern int num;
int main()
{
printf("%d",num);
return
0;
}
output: 5
Explanation:
Two or more global variables can have same name
but we can initialize only one of them.
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