Answer Posted / fazlur rahaman naik

With the help of pointer we can access a variable
address.with that we can change the value of the
variable.for eg:

main()
{
int a = 10;
int *x;

x = &a;

printf("a = %d\n",a);
*x = 978;
printf("a = %d\n");
}

now the value of the a is 978.

if we pass a pointer to a variable to a function then the
value of that variable will be chageed if we change it in
that function.
for eg:

main()
{
int b = 87;
int *x;
x = &b;
fun(x);
printf("b = %d\n");
}

fun(int *x)
{
*x = 879;
}

here the value of the b will be 879.

Array : Array is a collection of variable of similar types.
i.e. it can b an collection of n number of integers or arry
of characters etc.
for eg:

Take a examination marks of a class.it could b a float
value or a integer value.Then u need to take five variables
of float type or interger type.Insted of that u can take an
array of float or integer type.

float marks[n];

arrays r mainly used for strings.

char string[n];

Structure:
The structure is a collection of variables of various data
types.

the best example for this is employee details or student
details.

struct emloyee
{
char name[25];
int age;
float salary;
char mobile[15];
char desig[25];
};

a construct the"else" part of "if" statement contains anoth "if else" statement is called a) if-else b) else-if-else c) if-else-if-else d) chain if/if-else-if

699

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Declare the structure which contains the following members and write in C list of all students who score more than 75 marks. Roll No, Name, Father Name, Age, City, Marks.

679

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What are near, far and huge pointers?

642

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What is main () in c?

584

---

to find the closest pair

1816

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---

what are the different storage classes in c?

660

---

Give differences between - new and malloc() , delete and free() ?

605

---

What is data types?

636

---

Program to find the sum of digits of a given number until the sum becomes a single digit. (e.g. 12345=>1+2+3+4+5=15=>1+5=6)

685

---

How can I avoid the abort, retry, fail messages?

655

---

What are preprocessor directives in c?

630

---

Is c is a middle level language?

595

---

Explain what does the function toupper() do?

629

---

how to build a exercise findig min number of e heap with list imlemented?

1606

---

where are auto variables stored? What are the characteristics of an auto variable?

588

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