Ways of Passing Array from Function: C/C++ Brush up

In programming we make a call by two methods
1)call by value- Pass a value
2)call by reference - Pass a address and fun taking this address should have pointer.And also to                                            display result again pointer.

Array is passed to a function using Call be reference.

There is Two ways

1) Using &

1. void main( )
2. {
3. int a[5]={1,2,3,4,5}
4. for(int i=0 ; i<=4 ;i++)
5.   {
6. printarray(&a[0]);    //or printarray(&a);[NOT SURE]
7.    }
8. }
9. .
10. .
11. .
12. .
13. void printarray(int *p)
14. {
15. printf("%d",*p);
16. }

2) Without Using &

1. void main( )
2. {
3. int a[5]={1,2,3,4,5}
4. 
   
5. printarray(a);  
6.    
7. }
8. .
9. .
10. .
11. .
12. void printarray(int *p)
13. {
14. for(int i=0 ; i<=4 ;i++)
15.   {
16. printf("%d",*p);
17.    }
18. }
19. }

Passing Character Array through a Function

STRING IS THE ARRAY OF CHARACTER WITH ONE NULL '\O' CHARACTER IN THE END

There is 4 ways of initilizing a character

1) 

1. char c[4];
2. c[0]='j'; c[1]='o'; c[2]='h'; c[3]='n'; c[4]='\0';

2)

1. c[ ]={'j','o','h','n','\0'}

3)Using String Literal

1. c[ ]="john";

4) Using Pointer

1. char*c="Hellow";

1. int main( )
2. {
3. char *c="Hellow";
4. print( c)
5. .
6. return(0);
7. .
8. }
9. .
10. .
11. .
12. .
13. ..
14. .
15. void print(char *c)
16. {
17. int i=0;
18. while( *(c+i)!= '\0') )
19. {
20. printf("%c",c[i]);
21. i++;
22. }
23. printf("\n");
24. }
25. .
26. .//or
27. .
28. .
29. .
30. .
31. .
32. void print(char *c)
33. {
34. while( *(c)!= '\0') )
35. {
36. printf("%c",c[i]);
37. c++;
38. }
39. printf("\n");

Passing a 2-Dimentional Array through a Function

while passing two dimensional array to function last dimension is compulsory

1. int func (int a[ ][3])
2. {
3. .
4. .
5. .
6. .
7. .}

Passing a 3-Dimentional Array

1. int func (int a[ ][2][2])  / (int (*a)[2][2])
2. {
3. .
4. .
5. .
6. .
7. .}