DAILY:2-CLASS PRACTICE

Class practice is a section similar to the renew section ...but what differs is this section deals with current section not the basic section and contains mostly the practice sessions held in the class...

1./*wap to get 

1

12

123

1234

12345

*/

main()

{

int i,j;

for(i=1;5>=i;i++)

{

for(j=1;5>=j;j++)

printf("%d",j);

printf("\n");

}

}

dry run:

• analyse the pattern . .. . . .. .before writing the program
• in the pattern the numbers are printed from 1 to 2,1 to 3 ..... 1-5 if generalized it's 1-n
• the whole set is repeated 5 times such that n increases from 1-n in each repetition of above series
• so the pattern is nothing but a repitition of 1-n in general which is inturn repeated n times.
• so we cunstruct one loop to print 1-n and other to repaet this loop n times.
  

2./*

wap to print

5

54

543

5432

54321

*/

main()

{

int i,j;

for(i=5;i<=1;i--)

{

for(j=n;j>i;j--)

printf("%d",j);

printf("\n");

}

}

dryrun:

• this prog is similar to the above program
• here in the above pattern the numbers are repeated from n-1 in general
• a loop is cunstructed in order to evaluate the pattern
• this pattern is repeated n times and an according loop is cunstructed.
• if i=1;i is less than5 and the loop is enterd if j=5 and j is more than thanor equal to i hence it prints frpm n-i or 5-1 so on .....all the two loops are executed .

3./* wap to print

12345

1234

123

12

1

*/

main()

{

int i,j;

for(i=5;i>0;i--)

{

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

printf("%d",j);

printf("\n");

}

} 

4./*wap to print 

5

45

345

2345

12345

*/

main()

{

int i,j;

for(i=1;i>0;)

{

for(j=i;j<=5;j++)

printf("%d",j);

printf("\n");

}

}

5./*

12345

2345

345

45

5

*/

main()

{

int i,j;

for(i=5;i>0;i++)

{

for(j=i;j<=5;j++)

printf("%d",j);

printf("\n");

}

}

6./*

54321

5432

543

54

5

*/

main()

{

int i,j;

for(i=5;i>0;i++)

{

for(j=5;j>=i;j--)

printf("%d",j);

printf("\n");

}

}

7./*

1

121

12321

1234321

123454321

*/

main()

{

int i,j,k;

for(i=1;i<=5;i++)

{

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

printf("%d",j);

for(k=(i-1);k>0;k++)

printf("%d",k);

printf("\n");

}

}

8./*

123454321

1234321

12321

121

1

*/

main()

{

int i,j,k;

for(i=5;i>0;i--)

{

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

printf("%d",j);

for(k=(i-1);k>0;k++)

printf("%d",k);

printf("\n");

}

}

9./*

5

545

54354

5432543

543215432

*/

main()

{

int i,j;

for(i=5;i<0;i--)>

{

for(j=i;j<=i;j--)

printf("%d",j);

for(k=5;k<=i-1;k--)

printf("%d",k);

printf("\n");

}

}