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Call by reference:
Arguments to a function can be passed in two way; one by call by value and other by call
by reference. Call by value is passed either through a constant or variable. The call by reference is passed through address operator (&). In C the function definition argument must be declared as pointer variable to pass by reference, where as in C++ the call by reference can be used without declaring the function arguments as pointer variables. But in C++ both pointer argument method and without pointer argument can be adopted.
void f_ref(int &a, int &b); // void f_ref(int, int) is wrong for reference variable;
void main( )
{int a, b;
f_ref(a, b); // The value a is 10 and b is 20.
}
void f_ref(int &x, int &y)
{x =10;
y=20;
implementation of the power and factorial in programs
First line starts with T, number of test cases. Each test case T contains a necklace (N).
What is Ms dos?
Define the Float Data Type of c Language? The float is used to define floating point numbers. The Floating point numbers are stored in 32 bits with 6 digits of precision. Eg
WAP TO SWAP THE THREE DIGIT NUMBER void main () { int b,r,n,r1,r2; clrscr (); printf ("Enter the Value: "); scanf ("%d",&n); r=n%10; n=n/10; r1=n%10;
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differentiate between inbuilt and user defined functions
overloadstream insertion opertator to display the data of object on the console
C Program to check FACTORIAL main() { int i,j,m,fact,sum=0; clrscr(); printf("ENTER THE NO.: "); scanf("%d",&m);
Scope Rules and Storage Classes The storage class verifies the life of a variable in terms of its duration or its scope. There are four storage classes : automatic static
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