programs on if else and switch, Exercises of Computer Programming

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#import <stdio.h> int main() { printf("Hello world !! "); return 0; }

Lab 1

Program 1 : Write a program to print Hello world

Output :

Code:

#import <stdio.h> int main() { int a,b,c; printf("Sum Calculator \n\n"); printf("Enter First number: \n"); scanf("%d",&a); printf("Enter Second number: \n"); scanf("%d",&b); c=a+b; printf("The sum is :%d",c); return 0; }

Lab 1

Program 2: Write a program to Calculate the sum of two numbers entered by user.

Output :

Code :

#import <stdio.h> #import <math.h> int main() { printf("COMPOUND INTEREST CALCULATOR \n \n"); float p,r,t,ci,a; printf("Enter principal : \n"); scanf("%f",&p); printf("Enter rate (in %% p.a.): \n"); scanf("%f",&r); printf("Enter time (in years) : \n"); scanf("%f",&t); a=p*pow((1+r/100),t); ci=a-p; printf("Compound interest : %f \n", ci); printf("Amount: %f \n", a); return 0; }

Lab 1

Program 4 : Write a program to calculate compound interest.

Output :

Code :

#include <stdio.h> int main() { int a; printf("Enter a number :\n"); scanf("%d",&a); if(a%2==0) { printf("%d is divisble by 2 \n",a); } if(a%3==0) { printf("%d is divisble by 3 \n",a); } if(a%5==0) { printf("%d is divisble by 5 \n",a); } if(a%7==0) { printf("%d is divisble by 7 \n",a); } if(!(a%2==0 || a%3==0 || a%5==0 || a%7==0 )) { printf("%d is not divisble by 2,3,5 or 7",a); } return 0; }

Program 3 : Write a program to check whether a number is divisible by 2,3,5 or 7.

Output :

Code :

#include <stdio.h> int main() { int q1,q2,q3,q4; float p1,p2,p3,p4,t1,t2,t3,t4,t; char item1[20],item2[20],item3[20],item4[20]; printf("Enter name of item 1 : \n"); scanf("%s", item1); printf("Enter Quantitiy of %s : \n",item1); scanf("%d",&q1); printf("Enter Price of %s: \n",item1); scanf("%f",&p1); t1=q1p1; printf("\nEnter name of item 2 : \n"); scanf("%s", item2); printf("Enter Quantitiy of %s : \n",item2); scanf("%d",&q2); printf("Enter Price of %s : \n",item2); scanf("%f",&p2); t2=q2p2; printf("\nEnter name of item 3 : \n"); scanf("%s", item3); printf("Enter Quantitiy of %s : \n",item3); scanf("%d",&q3); printf("Enter Price of %s: \n",item3); scanf("%f",&p3); t3=q3p3; printf("\nEnter name of item 4 : \n"); scanf("%s", item4); printf("Enter Quantitiy of %s : \n",item4); scanf("%d",&q4); printf("Enter Price of %s: \n",item4); scanf("%f",&p4); t4=q4p4; t=t1+t2+t3+t4; printf("\nItem Quantity \t Price(per unit) \t Total \n"); printf("%s\t%d\t\t%.2f\t\t\t%.2f \n",item1,q1,p1,t1); printf("%s\t%d\t\t%.2f\t\t\t%.2f \n",item2,q2,p2,t2); printf("%s\t%d\t\t%.2f\t\t\t%.2f \n",item3,q3,p3,t3); printf("%s\t%d\t\t%.2f\t\t\t%.2f \n\n",item4,q4,p4,t4); printf("TOTAL \t\t\t\t\t\t %.2f",t); return 0; }

Program 4 : Write a program to take input for quantity and price of 4 items and print the

Total bill in proper format

Code :

printf("Enter Marks of English : \n"); scanf("%d",&d); printf("Enter Marks of Maths : \n"); scanf("%d",&e); y=((a+b+c+d+e)/500.0)*100; printf("Percentage is : %.2f\n",y); if(y>=60) { printf("FIRST DIVISION !"); } else if(y>=50 & y<60) { printf("SECOND DIVISION !"); } else if(y>=40 & y<50) { printf("PASS !"); } else { printf("FAIL"); } return 0; }

Output :

#include <stdio.h> int main() { int bs; float hra,da,total; printf("HRA and DA calculator\n\n"); printf("Enter Basic Salaray (Rs.) :\n"); scanf("%d",&bs); if(bs<=1500) { hra=(10.0/100)bs; da=(90.0/100)bs; total=hra+da+bs; printf("HRA : Rs.%.2f \n",hra); printf("DA : Rs.%.2f \n\n",da); printf("Total salary : Rs.%.2f \n",total); } else { hra=(50.0/100)bs; da=(98.0/100)bs; total=hra+da+bs; printf("HRA : Rs.%.2f \n",hra); printf("DA : Rs.%.2f \n\n",da); printf("Total salary : Rs.%.2f \n",total); } return 0; }

Program 6 : In a company, an employee is paid as under:

a. If basic salary is <=1500, then HRA = 10% and DA=90% of Basic salary.

b. If basic salary is >1500, then HRA = 500 and DA=98% of Basic salary.

If basic salary is input through keyboard. Write a program to print total salary

(Basic+HRA+DA).

Output :

Code :