Answer Posted / eng abedalmohdi almomani

system call can be called from either kernel space or user
space(in this case include switch to privilage mode) and
executed in kernel space while library called only from
user programm and may call systemcall to perform it is
function like "printf" that need "write" system call while
other not need kernel at all like sin(),cos().....

systemcall examples : write,read,close,mmap,open,.......
library examples: fopen,fclose,printf,scanf,fscanf,.....

What does c mean in basketball?

1045

---

What type of function is main ()?

1081

---

If fflush wont work, what can I use to flush input?

1151

---

Explain built-in function?

1184

---

Explain what are linked list?

1089

---

int i[2], j; int *pi;i[0] = 1; i[1] = 5; pi = i; j = *pi + 1 + *(pi + 1)Value of j after execution of the above statements will be a) 7 b) 6 c) 4 d) pointer

1090

---

#include #include struct stu { int i; char j; }; union uni { int i; char j; }; void main() { int j,k; clrscr(); struct stu s; j=sizeof(s); printf("%d",j); union uni u; k=sizeof(u); printf("%d",k); getch(); } what is value of j and k.

6389

---

What would the following code segment printint k = 8;docout << "k = " << k << " ";while k++ < 5; a) 13 b) 5 c) 8 d) pointers

1303

---

Explain what is the heap?

1099

---

What are disadvantages of C language.

1220

---

What is string function c?

1071

---

Explain what is wrong with this program statement?

1155

---

What do you mean by recursion in c?

1161

---

Using functions, write a program that multiplies two arrays. Use the following functions: - Function ReadArray - Function MultiplyArrays - Function DisplayArrays

2402

---

What is a macro?

1163

---