TUTORIAL 10

 

2. Print the following shapes using the loop construct of C programming.

#include<stdio.h>

int main()

{

int A;

int B;

for(A=1;A<=6;A++){

for(B=1;B<=A;B++){

printf("*");

}

printf("\n");

}

return 0;

}

 

 

          

#include<stdio.h>

int main()

{

int A;

int B;

for(A=1;A<=6;A++){

for(B=1;B<=6;B++){

printf("*");

}

printf("\n");

}

return 0;

}

    

#include<stdio.h>

int main()

{

int A;

int B;

int C;

for(A=6;A>=1;A--){

for(B=1;B<=A;B++){

printf("*");

}

printf("\n");

}

return 0;

}

 

    

#include<stdio.h>

int main()

{

int A;

int B;

int C;

for(A=1;A<=6;A++){

for(B=6;B>=A;B--){

printf(" ");

}

for(C=1;C<=A;C++)

printf("*");

printf("\n");

}

return 0;

}

 #include<stdio.h>

int main()

{

int A;

int B;

int C;

for(A=1;A<=6;A++){

for(B=2;B<=A;B++){

printf(" ");

}

for(C=6;C>=A;C--)

{

printf("*");

}

printf("\n");

}

return 0;

}

    

#include<stdio.h>

int main()

{

int A;

int B;

for(A=1;A<=5;A++){

for(B=1;B<=A;B++)

{

printf("%i",B);

}

printf("\n");

}

return 0;

}

 3. Find the minimum and maximum of sequence of 10 numbers.

#include<stdio.h>

int main()

{

int x,max=0,min=0,num;

printf("Enter 10 numbers:\n");

scanf("%i",&num);

min=num;

max=num;

for(x=1;x<=9;x++){

scanf("%i",&num);

if(num>max){

max=num;

}

if(num<min) 

min=num;

}

printf("Maximum value is:%i\n",max);

printf("Maximum value is:%i",min);

return 0;

}

        

4. Find the total and average of a sequence of 10 numbers.

#include <stdio.h>

int main ()

{

int x, number;

float average;

int total = 0;

printf("Enter 10 numbers\n");

for (x=1; x<=10; x++)

{  

scanf("%i", &number);

total = total+number;

}

average = total /10.0;

printf("Total : %i\n",total);

printf("Average : %.2f",average);

return 0;

}

            

 

5. Write a program to generate and display a table of n and n 2 , for integer values of n ranging from 1 to 10. Be certain to print appropriate column headings. 

#include<stdio.h>

int main()

{

int x,c;

printf(" n   n^2\n\n");

for(x=1;x<=10;x++)

{

printf("%2i %4i\n",x,x*x);

}

return 0;

}

    

 

6. A triangular number can also be generated by the formula

             triangularNumber = n (n + 1) / 2  

for any integer value of n. For example, the 10th triangular number, 55, can be generated by substituting 10 as the value for n in the preceding formula. Write a program that generates a table of triangular numbers using the preceding formula.  

#include<stdio.h>

int main()

{

int n,x;

int triangularNumber=0;

printf("Enter number:");

scanf("%i",&n);

printf("number\ttriangular number\n");

printf("------\t------------------\n");

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

{

triangularNumber=x*(x+1)/2;

printf("%3i %5i\n",x,triangularNumber);

}

return 0;

}

    

7. The factorial of an integer n, written n!, is the product of the consecutive integers 1 through n. For example, 5 factorial is calculated as 5! = 5 x 4 x 3 x 2 x 1 = 120 

    

#include<stdio.h>

int main()

{

int x;

unsigned long long total = 1;

printf("Enter a non-negative number:");

scanf("%i",&x);

if(x<0)

{

printf("Factorial is not defined for negative numbers.\n");

}

else

{

printf("%i! = ",x);

for(x;x>=2;x--)

{

total*=x;

printf("%i*",x);

}

printf("1 = %llu\n",total);

}

return 0;

}

    

 

8. Write a program to generate and print a table of the first 10 factorials.  

#include<stdio.h>

int main()

{

int total=1,x;

printf("First 10 factorials\n\n");

for(x=1;x<=10;x++)

{

total=total*x;

printf("%2i%8i\n",x,total);

}

return 0;

}

    

 

9. Display the n terms of harmonic series and their sum.

 1 + 1/2 + 1/3 + 1/4 + 1/5 ... 1/n terms 

Test Data : 

Input the number of terms : 5 

Expected Output : 1/1 + 1/2 + 1/3 + 1/4 + 1/5 + 

Sum of Series upto 5 terms : 2.283334 

#include<stdio.h>

int main()

{

int x,n;

float Sum=0;

printf("Enter the number of terms:");

scanf("%i",&n);

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

{

Sum += 1.0/x;

printf("1/%i + ",x);

}

printf("\nSum of series up to 5 terms : %.6f",Sum);

return 0;

}

        

 10. Write a program to generate students repot as shown below.

#include<stdio.h>

int main()

{

int x,n;

int Index[100];

int m[100];

int p[100];

int c[100];

int total[100];

float Average[100];

char Name[100][100];

char Grade[100];

printf("How many students do you entered:");

scanf("%i",&n);

for(x=0;x<n;x++)

{

printf("\nStudent 0%i\n",x+1);

printf("-----------\n");

printf("Enter Index number:");

scanf("%i",&Index[x]);

printf("Enter Name:");

scanf("%s",&Name[x]);

printf("Enter Maths marks:");

scanf("%i",&m[x]);

printf("Enter Physics marks:");

scanf("%i",&p[x]);

printf("Enter Chemistry marks:");

scanf("%i",&c[x]);

total[x]=m[x]+p[x]+c[x];

Average[x] = total[x]/3.0;

if(Average[x]>=90)

Grade[x] = 'A';

else if(Average[x]>=80)

Grade[x] = 'B';

else if(Average[x]>=70)

Grade[x] = 'C';

else if(Average[x]>=60)

Grade[x] = 'D';

else if(Average[x]>=40)

Grade[x] = 'E';

else 

Grade[x] = 'F';    

}

printf("\nIndex Number Name Maths Physics Chemistry Total                                    Average Grade\n");

printf("----------------------------------------------------------------------------------------\n");

for(x=0;x<n;x++){

printf("%4i\t",Index[x]);

printf("\t%s\t",Name[x]);

printf("%3i\t",m[x]);

printf("%3i\t",p[x]);

printf("%3i\t\t",c[x]);

printf("%3i\t  ",total[x]);

printf("%3.2f\t ",Average[x]);

printf("%c\n",Grade[x]);

}

return 0;

}

        

        

 

11. Assume a village has 20 houses. Input electricity unit charges and calculate total electricity bill according to the following criteria: 

 For first 50 units Rs. 0.50/unit 

 For next 100 units Rs. 0.75/unit 

 For next 100 units Rs. 1.20/unit 

 For unit above 250 Rs. 1.50/unit 

An additional surcharge of 20% is added to the bill 

#include<stdio.h>

int main()

{

int x;

int serial[20];

char house[20][100];

int units[20];

float bill;

float surcharge[20];

float amount[20];

for(x=0;x<20;x++)

{

printf("House %2i\n",x+1);

printf("-----------\n");

printf("Enter Serial Number:");

scanf("%i",&serial[x]);

printf("House Address:");

scanf("%s",&house[x]);

printf("Units:");

scanf("%i",&units[x]);

bill=0;

if(units[x]<=50)

bill=units[x]*0.50;

else if(units[x]<=150)

bill=50*0.50+(units[x]-100)*0.75;

else if(units[x]<=250)

bill=50*0.50+100*0.75+(units[x]-150)*1.20;

else

bill=50*0.50+100*0.75+100*1.20+(units[x]-250)*1.50;

surcharge[x]=bill*20/100;

amount[x]= bill+surcharge[x];

}

printf("\nSerial Number House Address Units Surcharge Amount to be paid\n");

printf("______________________________________________________________________\n");

for(x=0;x<20;x++)

{

printf("%5i\t\t",serial[x]);

printf("%-12s\t",house[x]);

printf("%5i\t",units[x]);

printf("%10.2f\t",surcharge[x]);

printf("%13.2f\t\n",amount[x]);

}

return 0;

}