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Explain Various Loop Control structures in c with example

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Explain Various Loop Control structures in c,
Explain Do while, for, while
Loop present in c ,break,continue example with source code



Explain Various Loop Control structures in c

Or

Explain Do while, for, while

Loop present in c

Different loops
1.while loop

2. do while loop

3. for loop

a) all loops use same logical(true /false)
b) stop
1.While loop: while(something is true)
{
   (body of program)
}
If the loop condition is not true then at the beginning loop never executed
2.do while loop: do while loop is always executed once.do while loop statement allows you to execute code block in loop body at least one.
syntax:
 do {  // statements  } while (expression);
do {loop body}
  While loop(loop condition);

  Void main {
  do{
  printf(“hello world”);
  }
  while (4<1 data-blogger-escaped-br=""> for example using do while loop statement
#include
void main()
{  int x = 5;
int i = 0;
// using do while loop statement
do{ i++;
printf("%d\n",i);
}while(i < x);
 }
The program output
1
2
3
4
3. For loop:Thefor loop is used to implement any type of loopcondition. It is based on numeric variables.There are three parts which is separated by semi-colons in control block of the forloop.initialization_expression is executed before execution of the loop starts.
The execution of the loop continues until the loop_condition is false
Theincrement_expression, is usually used to increment the loop counter. This is executed at the end of each loop iteration.
for example of using for loop statement to print an integer five times


#include

    void main()
{
    // using for loop statement
    int max = 5;
    int i = 0;
     for(i = 0; i
 printf("%d\n",i);
    }
 }
And the output is
1
2
3
4
5

For Loop Example Using C
For example:
Void main()
{
intp,n,count;
float r, si;
for (count =3;count <=3;count=count ++ )
{
printf (“enter the value of p,n,r”);
scanf(“%d%d%f”,&p,&n,&r);
si =(p*n*r)/100;
printf(“simple interest =%f”,si);
}
getch();
}
nesting for loop: void main()
{
int r ,c,sum;
for(r =1;r<=3;r++)
{
for (c=1;c=2;c++)
{
sum =r+c;
printf(“r=%d,c=%d,sum=%d\n”,r,c,sum);
}
}
}

7.    Explain Continue and Break Statement in c

Continue Statement 

 continue statement is used to break current iteration. After continue statement the control returns to the top of the loop test conditions.
Void main ()
{
int r ,c;
for(r=1;r<=10;r++)
{
if (r==5)
Continue;
else
printf(“r=%d,\n”,r);
}
getch();
}

Break statement:

 break statement is used to break any type of loop such as while, do while an for loop. break statement terminates the loop body immediately.
Void main()
{
int a;
for (a=1;a<=10;a++)
{
if (j==5)
Break;
else
printf(“%d\n”,a);
}
Printf(“hello”) // control pas here
getch();
}


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