Software Engineering BY Roger S. Pressman

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Operating System Concepts, 7th Editon - Silberschatz, Galvin, Gagne

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Let Us C eBook

This book covers these three aspects of C programming and doesn’t assume any programming background. It begins with the basics and steadily builds the pace, so the reader finds it easy to handle more complicated topics later. This popular author has crafted hundreds of excellent programming examples and exercises for every aspect of C programming.

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Write a program to generate a following numbers triangle.

(Where user entered number through keyboard, for example if num=5)

                            54321

                            4321

                            321

                            21

                            1

Ans.

/*c program for number triangle pyramid*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);

 for(; num>=1; num--)

 {

  for(c=num; c>=1; c--)

     printf("%d",c);

  printf("\n");

 }
 getch();

 return 0;

} 

/*************OUTPUT****************
Enter loop repeat number(rows): 5

                            54321

                            4321

                            321

                            21

                            1

************************************/

Read More

Write a program to generate a following numbers triangle:

(Where user entered number through keyboard, for example if num=5).

      

				1
			1	2
		1	2	3
	1	2	3	4
1	2	3	4	5

Ans.

/*c program for number triangle pyramid*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c,sp;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(sp=num-r; sp>=1; sp--)

     printf(" ");

  for(c=1; c<=r; c++)

     printf("%d",c);

  printf("\n");

 }
 getch();

 return 0;

} 

/*************OUTPUT****************
Enter loop repeat number(rows): 5

				1
			1	2
		1	2	3
	1	2	3	4
1	2	3	4	5

************************************/

Read More

Write a program to generate a following numbers triangle:

Where user entered number through keyboard, for example if num=5)

                                12345

                                1234

                                123

                                12

                                1

Ans.

/*c program for number triangle pyramid*/
#include<stdio.h>

#include<conio.h>

int main()

{

 int num,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);

 for(; num>=1; num--)

 {

  for(c=1; c<=num; c++)

     printf("%d",c);

  printf("\n");

 }

 return 0;

} 

/*************OUTPUT****************
Enter loop repeat number(rows): 5

                                12345

                                1234

                                123

                                12

                                1

*********************************/

Read More

Write a program to generate a following numbers triangle:

(Where user entered number through keyboard, for example if num=5)

                        1

                        12

                        123

                        1234

                        12345

Ans.

/* c program for number triangle*/

#include<stdio.h>

//#include<conio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; r<=num; r++)

 {

  for(c=1; c<=r; c++)

     printf("%d",c);

  printf("\n");

 }
 //getch();
 return 0;

} 

/*************OUTPUT**************
Enter loop repeat number(rows): 5

                        1

                        12

                        123

                        1234

                        12345

***********************************/

Read More

Write a program to generate a following numbers structure:

(Where user entered number through keyboard, for example if num=5)

                            11111

                            22222

                            33333

                            44444

                            55555

Ans.

#include<stdio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(c=num; c>=1; c--)

     printf("%d",r);

  printf("\n");

 }

 return 0;

}

/*************OUTPUT****************
Enter loop repeat number(rows): 5

                            11111

                            22222

                            33333

                            44444

                            55555

************************************/

Read More

Write a program to generate a following numbers structure:

(Where user entered number through keyboard, for example if num=5)

                            55555

                            44444

                            33333

                            22222

                            11111

Ans.

/* c program for number structure*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): "); 

 scanf("%d",&num);
 for(r=num; r>=1; r--)

 {

  for(c=num; c>=1; c--)

     printf("%d",r);

  printf("\n");

 }
 getch();

 return 0;

}
/*************OUTPUT**************
Enter loop repeat number(rows): 5

                            55555

                            44444

                            33333

                            22222

                            11111

***********************************/              

Read More

Write a program to generate a following numbers structure:

(Where user entered number through keyboard, for example if num=5)

                                54321

                                54321

                                54321

                                54321

                                54321

Ans.

/* c program for symbol triangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(c=5; c>=1; c--)

     printf("%d",c);

  printf("\n");

 }
 getch();

 return 0;

}
/*************OUTPUT**************
Enter loop repeat number(rows): 5

                                54321

                                54321

                                54321

                                54321

                                54321

***********************************/

Read More

Write a program to generate a following numbers structure:

Where user entered number through keyboard, for example if num=5)

                        12345

                        12345

                        12345

                        12345

                        12345

Ans.

/* c program for number rectangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(c=1; c<=num; c++)

   printf("%d",c);

  printf("\n");

 }
 getch();

 return 0;

}

/*************OUTPUT**************
Enter loop repeat number(rows): 5

                        12345

                        12345

                        12345

                        12345

                        12345

***********************************/

Read More

Write a program to generate a following @'s triangle?

               

				@
			@	@
		@	@	@
	@	@	@	@
@	@	@	@	@

Ans.

/* c program for symbol triangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c,sp;

 printf("Enter loop repeat number(rows): "); 

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(sp=num-r; sp>=1; sp--)

     printf(" ");

  for(c=1; c<=r; c++)

     printf("@");

  printf("\n");
 }
 getch();

 return 0;

} 
/*************OUTPUT**************
Enter loop repeat number(rows): 5

				@
			@	@
		@	@	@
	@	@	@	@
@	@	@	@	@

***********************************/

Read More

Write a program to generate a following #'s triangle?

#
#	#
#	#	#
#	#	#	#
#	#	#	#	#

Ans.

/* c program for symbol triangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(c=1; c<=r; c++)

     printf("#");

  printf("\n");
 }
 getch();

 return 0;

} 

/*************OUTPUT**************
Enter loop repeat number(rows): 5

#
#	#
#	#	#
#	#	#	#
#	#	#	#	#

***********************************/

Read More

Write a program to generate a following @'s triangle?

@	@	@	@	@
@	@	@	@
@	@	@
@	@
@

/* c program for symbol triangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,c;

 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(; num>=1; num--)

 {

  for(c=1; c<=num; c++)

     printf("@");

  printf("\n");

 }
 getch();

 return 0;

} 

/*************OUTPUT**************
Enter loop repeat number(rows): 5

@	@	@	@	@
@	@	@	@
@	@	@
@	@
@

***********************************/

Read More

Write a program to generate a following #'s triangle?

#	#	#	#	#
	#	#	#	#
		#	#	#
			#	#
				#

Ans.

/* c program for symbol triangle*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r=1,c,sp;

 printf("Enter loop repeat number(rows): "); 

 scanf("%d",&num);
 for(; num>=1; num--,r++)

 {
  for(sp=r; sp>1; sp--)

     printf(" ");

  for(c=1; c<=num; c++)

    printf("#");

  printf("\n");

 }
 getch();

 return 0;

} 

/*************OUTPUT**************
Enter loop repeat number(rows): 5
#####
 #### 
  ###
   ##
    #
***********************************/

Read More

Write a program to generate a following structure?

@@@@@

@@@@@

@@@@@

@@@@@
@@@@@ 
                    

Ans.   

/* c program for symbol structure*/

#include<stdio.h>

#include<conio.h>

int main()

{

 int num,r,c;
 printf("Enter loop repeat number(rows): ");

 scanf("%d",&num);
 for(r=1; num>=r; r++)

 {

  for(c=1; c<=num; c++)

     printf("@");

  printf("\n");

 }
 getch();

 return 0;

}

/************* OUTPUT **************
Enter loop repeat number(rows): 5

                @@@@@

                @@@@@

                @@@@@

                @@@@@

                @@@@@
***********************************/

Read More