C Programming

The Executive Order 11850 is the prohibition of using chemical herbicides in war or in agents to contain or halt public riots. It went into effect in the year 1975.

#define CHAIRS 5 /* # chairs for waiting customers */

typedef int semaphore; /* use your imagination */

semaphore customers = 0; /* # of customers waiting for service */

semaphore barbers = 0; /* # of barbers waiting for customers */

semaphore mutex = 1; /* for mutual exclusion */

int waiting = 0; /* customer are waiting (not being cut) */

void barber(void)

{

while (TRUE) {

down(&customers); /* go to sleep if # of customers is 0 */

down(&mutex); /* acquire access to "waiting' */

waiting = waiting - 1; /* decrement count of waiting customers */

up(&barbers); /* one barber is now ready to cut hair */

up(&mutex); /* release 'waiting' */

cut_hair(); /* cut hair (outside critical region */

}

}

void customer(void)

{

down(&mutex); /* enter critical region */

if (waiting < CHAIRS) { /* if there are no free chairs, leave */

waiting = waiting + 1; /* increment count of waiting customers */

up(&customers); /* wake up barber if necessary */

up(&mutex); /* release access to 'waiting' */

down(&barbers); /* go to sleep if # of free barbers is 0 */

get_haircut(); /* be seated and be served */

} else {

up(&mutex); /* shop is full; do not wait */

}

}


A subroutine call generates additional work for the hardware to perform when activated. A macro in general does not call a subroutine but rather puts the commands in-line inside the loop, resulting in a faster program.

printf does return the length:

size_t len = printf ("%s", str);

depends on the depth of memory, N address lines can map 2 Power N locations.

It's actually not true. In order to make a good program which can work with big arrays you have to use dynamic arrays because you can cleam memory used by dymanic arrays any time. For static arrays is not true, memery which was reserved for static arrays will be available for other applications only when you finish working with your application (which is working with static arrays).

I require more details but let me answer in terms of team hierarchy.

Centralized test groups: A TCOE is formed in an organization which provide test resources (people) to projects as per their requiement. Training, skill, Time and billings are tracked. Mostly lead by Test Manager.

Decentralized: Project teams own test resouces. so a project manager/dev manager are leads and test team report to them dedicately.

#include<stdio.h>

#include<conio.h>

void main()

{

clrscr();

int i;

int a[4]={1,2,3,4};

int *p1,*p2,*p3;

for(i=0;i<4;i++)

{

p1=&a[0];

p2=&a[2];

p3=*p2-*p1;

printf("\n value of p3%d",p3);

}

getch();

}

The main advantage is of course convenience - it is much easier to write\read code in a high-level language.

The main disadvantage is the performance - in general, if you write the same program in a high-level language and in a low-level language, the first will usually take more time.

It can make a difference if your program is very heavy, or if performance is very important (e.g. you're writing an operating system), but for most normal programs I would recommend using a high-level program, and python is a great example of one!

C was originally developed from 1969 and 1973.

#include<stdio.h>

void main()

{

int i,j,k,n;

printf("Enter the value of n: ");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

for(k=1;k<=n-i;k++)

printf(" ");

for(j=1;j<=2*i-1;j++)

{

printf("*");

}

printf("\n");

}

}

Yes, but 'cout' is not a statement! Examples for statements: null-statement, block, expression, if-else, while, do-while, for, continue, switch, break, return.

A pointer is a variable that stores the memory address of another variable. In programming, pointers are typically located in the stack if they are local variables within a function, or in the heap if they are dynamically allocated. The actual data that the pointer points to can reside in either memory area, depending on how it was allocated.

A space used by memory to store information for later use is called the cache (pronounced like cash).

Importance of union in 'C':

unions are the concept borrowed from structures in structures we allow different datatypes in which each datatype is allocated a separate memory location .But in unions same as structures we use different data types but all the datatypes will be allocated to a single memory location and only one datatype with maximum size will be used for allocation of all the data types used in a union program.Sample code for union is as follows:

union item

{

int m;

float c;

char x;

}code;

In the above program we used three kinds of datatypes here integer size is 4 so the other data types will be shared in the same location of size 4.then the memory will not be wasted and all the memory will be utilized perfectly.

Controlled

A function is not deigned in to another function. It is because that would lead to dependency injection.

Yes, you can use array-elements as parameters. Do you have any problem with that?

Three:

'

n

'

int array[2][10][20];

1. a is a factor of b.

2. c = 2b = 4a, thus b = 2a and c = 4a.

3. d is prime between 10 & 20.

4. a + b + c + d = 41.

Therefore: a + 2a + 4a + d = 41

7a + d = 41

d = 41 - 7a

The only integer value for awhich results in d being a prime between 10 and 20 is where a = 4.

If a = 4 then

b = 2a = 4 * 2 = 8

c = 4a = 4 * 4 = 16

d = 41 - (7*4) = 41 - 28 = 13

The numbers are thus 4,8,16 and 13.

That depends on where you define them. Arrays defined inside functions are declared on the stack (like other variables defined in functions). Arrays defined outside of any function, or using the static keyword inside a function are allocated in the static data area of the program.

Other arrays may be allocated using malloc() (or "new" in C++); these are allocated on the heap.

Loops are used to repeat the execution of the same set of instructions again and again in a program.

When a declared variable receives a value to hold.

i.e.

int lalalala;

lalalala = 0; //initialization of lalalala