C pointers
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Pointer in C is a variable that stores the address of another variable. The document discusses pointers in C including syntax, accessing pointers, and common mistakes made when working with pointers. It shows how to declare a pointer variable, take the address of a variable and store it in a pointer, dereference a pointer to access the value at the address, and how the value is changed when accessed through a pointer or variable.
C pointers
- 1. Pointer in C Md. Shafiuzzaman Lecturer, Dept. of CSE, JUST
- 3. Address #include <stdio.h> int main() { int var = 5; printf("var: %dn", var); printf("address of var: %p", &var); return 0; } var: 5 address of var: 2686778
- 5. Access to Pointers int* pc, c; c = 5; pc = &c; printf("%d", *pc); // Output: 5
- 6. Access to Pointers int* pc, c; c = 5; pc = &c; c = 1; printf("%d", c); // Output: 1 printf("%d", *pc); // Ouptut: 1
- 7. Access to Pointers int* pc, c; c = 5; pc = &c; *pc = 1; printf("%d", *pc); // Ouptut: 1 printf("%d", c); // Output: 1
- 9. Common mistakes when working with pointers