Constants are defines using the final keyword.Variables are defined using the one of the keywords:charbooleanintdoublelongintStringTo use a constant you would have to put in something likedouble final pi = 3.14;
By dereferencing the pointer variable. This can be achieved in two ways: typedef struct s { int i; float f; }; void f (struct s* p) { int x = p->i; /* using pointer to member operator */ float y = (*p).f; /* using dereference operator */ } The two methods are functionally equivalent.
long float myfun();
In C float a[8]; In Java float a[] = new float[8];
THIS IS FOR JAVA i don't know about anything about other languages yes it can be assignedthe syntax is:int (number) = (float) numberFOR EXAMPLE:int = a;a = (float ) 5.5;if the (float) is not there then in Java it gives an error saying precision loss of data type
float myVariable = 20.1234;
int* pint; // instantiate a pointer to an int. float* pflt; // instantiate a pointer to a float.
The increment operator in C++ is defined by operator++(). All arithmetic types (char, int, float, double, long, short, long long and long double) and all pointer types except void* are supported by operator++(). User-defined types can overload operator++() to provide support where required. operator++() has two versions, prefix increment and postfix increment. Prefix increment behaves as one would expect, incrementing the operand by 1 and returning the modified value. Postfix increment also increments the operand, however, the return value is the pre-incremented value. To understand the difference between prefix and postfix, consider the following: int i = 0; int j = ++i; // i=1, j=1 int i = 0; int j = i++; // i=1, j=0
Constants are defines using the final keyword.Variables are defined using the one of the keywords:charbooleanintdoublelongintStringTo use a constant you would have to put in something likedouble final pi = 3.14;
it is used to know the memory size of variable of data type. Ex: float a; printf ("sizeof (a)= %d\n", sizeof (a)); or: printf ("sizeof (float)= %d\n", sizeof (float));
By dereferencing the pointer variable. This can be achieved in two ways: typedef struct s { int i; float f; }; void f (struct s* p) { int x = p->i; /* using pointer to member operator */ float y = (*p).f; /* using dereference operator */ } The two methods are functionally equivalent.
long float myfun();
In C float a[8]; In Java float a[] = new float[8];
When assigning a literal value, such as 5.628, to a float variable, you can avoid the decimal truncation warning by either using the float form of the constant (float var = 5.628f), typecasting the assignment (float var = (float) 5.628), or by making the variable double (double var = 5.628).
A float variable can store both positive and negative numbers.
4
You can declare them one by one. However, if you want to store lots of related data, you may want to consider using an array, where you use a single variable name (for example) for 1000 different items, and a number called an index to access the individual items.