![mohammed.sikander@cranessoftware.com 2
char *ptr_name = “SIKANDER”;
char str_name[ ] = “SIKANDER”;
• Can we make a pointer point to string literal?](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-2-320.jpg)
![mohammed.sikander@cranessoftware.com 3
char *ptr_name = “SIKANDER”;
char str_name[ ] = “SIKANDER”;
printf(“ %s n“ , ptr_name);
printf(“ %s n“ , str_name);
• Can we print the string through pointer.](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-3-320.jpg)
![mohammed.sikander@cranessoftware.com 4
char *ptr_name = “SIKANDER”;
char str_name[ ] = “SIKANDER”;
printf(“Length of %s = %dn“ , ptr_name , strlen(ptr_name));
printf(“Length of %s = %dn“ , str_name , strlen(str_name));](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-4-320.jpg)
![mohammed.sikander@cranessoftware.com 5
char *ptr_name = “SIKANDER”;
char str_name[ ] = “MUQADDAR”;
printf(“Size of ptr_name = %dn“ , sizeof(ptr_name));
printf(“Size of str_name = %dn“ , sizeof(str_name));](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-5-320.jpg)
![We can have arrays where each element
can be a pointer
int *
char **
int *
int *
int *
int *
int *arr_ptr[5];
int
int
int
int
int
int arr[5];
What is size of arr?
What is size of arr_ptr?](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-9-320.jpg)
![char **
Char *arr_ptr[5];
char
*
char *
char *
char *
char *
char
char
char
char
char
Char arr[5];
What is size of arr?
What is size of arr_ptr?](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-10-320.jpg)
![int x = 10;
int *ptr = &x;
int arr[5]
int *ptr = arr;
int a = 10;
int b = 23;
int arr[ ] = {12,34,54};
int *ptr[ ] = {&a , &b , arr};](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-11-320.jpg)
![char *capitalCities[] = { “Bangalore”, “Chennai”,
“Guwahati”, “Amravathi”};
Bangalore
Chennai
Guwahati
Amravathi
*
*
*
*
char *
char *
char *
char *
char *str = “VxWorks”;](https://image.slidesharecdn.com/pointer-level2-160729111520/85/Pointer-level-2-12-320.jpg)
Pointer level 2
- 1. Prepared by Mohammed Sikander Technical Lead Cranes Software International Limited
- 2. mohammed.sikander@cranessoftware.com 2 char *ptr_name = “SIKANDER”; char str_name[ ] = “SIKANDER”; • Can we make a pointer point to string literal?
- 3. mohammed.sikander@cranessoftware.com 3 char *ptr_name = “SIKANDER”; char str_name[ ] = “SIKANDER”; printf(“ %s n“ , ptr_name); printf(“ %s n“ , str_name); • Can we print the string through pointer.
- 4. mohammed.sikander@cranessoftware.com 4 char *ptr_name = “SIKANDER”; char str_name[ ] = “SIKANDER”; printf(“Length of %s = %dn“ , ptr_name , strlen(ptr_name)); printf(“Length of %s = %dn“ , str_name , strlen(str_name));
- 5. mohammed.sikander@cranessoftware.com 5 char *ptr_name = “SIKANDER”; char str_name[ ] = “MUQADDAR”; printf(“Size of ptr_name = %dn“ , sizeof(ptr_name)); printf(“Size of str_name = %dn“ , sizeof(str_name));
- 9. We can have arrays where each element can be a pointer int * char ** int * int * int * int * int *arr_ptr[5]; int int int int int int arr[5]; What is size of arr? What is size of arr_ptr?
- 10. char ** Char *arr_ptr[5]; char * char * char * char * char * char char char char char Char arr[5]; What is size of arr? What is size of arr_ptr?
- 11. int x = 10; int *ptr = &x; int arr[5] int *ptr = arr; int a = 10; int b = 23; int arr[ ] = {12,34,54}; int *ptr[ ] = {&a , &b , arr};
- 12. char *capitalCities[] = { “Bangalore”, “Chennai”, “Guwahati”, “Amravathi”}; Bangalore Chennai Guwahati Amravathi * * * * char * char * char * char * char *str = “VxWorks”;
- 14. names++ tries to change the base address of array. We cannot change the base address of array. Str was a pointer, names is an array. mohammed.sikander@cranessoftware.com 14
- 17. char ** * Bangalore Chennai Guwahati Amravathi NULL * * * * char * char * char * char *
- 18. Void pointers can hold the address of any type of object. Dereferencing on void pointers are not allowed. Incrementing void pointers are not allowed.