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Mathematical Statements and assignments
Within C we can directly load up the variable from within the program using the mathematical expression equates (=) e.g.
a= 'h'; Stores the character h in the variable A a=1; Stores the number 1 in the variable A b= 1.00E-10; Stores the number 1x10-10 in B c = 2.345; Stores the number 2.345 into c The assignment could be a self replacement type i.e. A=A+n; Adds n to the contents of the variable A and replaces the old value in A with the new one .The + operator is a mathematical operator which means add , likewise.
* means multiply / means divide - means subtract % (remainder of an integer division) ANSI C allows us to replace the simple formula A = A + n by a condensed version i.e A+=n; means A = A +n; e.g. a+=3.2 or a+=2; A-=n; means A = A-n; Likewise *=, /=, %= also exists. If the element to be subtracted/added is always one then we can use the increment operator (++) and decrement operator (--) i.e. ++A, A--, these can be pre operators and post operators (see loops) i.e. A+=1. Also parentheses (brackets) are used i.e. (). To supplement the C mathematical expressions scientific functions are available. We shall discuss these under the section concerned with functions. We can now construct simple programs using scanf, printf and mathematical functions.
void main() { int *p, *q, i ; p=(int*)100; q=(int*)200; i=q-p; printf("%d",i); } }
#include #include #include void* memorycopy (void *des, const void *src, size_t count) { size_t n = (count + 7) / 8; char* destination = (char *) des; char* source =
Write a main program that uses these system calls to echo the typed characters. The pseudo code will look something like: void traphandler () { if (R0 == 0) { // read sys
This problem familiarizes you with using random numbers in C++. The program is to compute a good approximation of π using a simulation method called "Monte Carlo". The following fi
What about Virtual Destructor? describe it.
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Each function has its own stack frame between %fp and %sp. Let Caller calls Callee. Then Caller's %sp becomes callee's %fp, and callee's %sp set to be a new value (a smaller one be
When I develop a destructor, do I require to explicitly call the destructors for my member objects?
How does free know the size of memory to be deleted.? int *i = (int *)malloc(12); followed by free(i); how did free function call know how much of memory to delete? A: It bas
An employee’s total weekly pay equals the hourly wage multiplied by the total number of regular hours plus any overtime pay. Overtime pay equals the total overtime hours multiplied
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