Answer Posted / anonimos

volatile variables are used on RT Embedded systems to
interface a physical memory mapped/IO mapped cell on the
computer board (volatile pointer).

Example define IO port:
#define PortA (*(volatile unsigned char *)0x3b)
unsigned char inputValue=PortA;

optimization may attempt to perform paging to hard drive of
to cache or even CPU registers so when reading from the
physical location in Mem/IO space the program will actually
read old value that was paged/cached by optimization
algorithm of the computer/board, even after the Input
changed on this Memory/IO cell.

volatile instruct the compiler to prevent optimization by
caching to registers/cache.

What is struct node in c?

1123

---

What is restrict keyword in c?

1166

---

What is n in c?

1109

---

What is a static variable in c?

1167

---

Where is volatile variable stored?

1142

---

which is conditional construct a) if statement b) switch statement c) while/for d) goto

1261

---

What is use of bit field?

1349

---

What is the behavioral difference when include header file in double quotes (“”) and angular braces (<>)?

1394

---

How many keywords are there in c?

1123

---

pierrot's divisor program using c or c++ code

2284

---

What is the use of function in c?

1247

---

cin.ignore(80, _ _);This statement a) ignores all input b) ignores the first 80 characters in the input c) ignores all input till end-of-line d) iteration

1152

---

How many types of operators are there in c?

1087

---

What are linked lists in c?

1177

---

Explain the concept and use of type void.

1165

---