Afaq Ahmad Khan

Capricorn or Kaprekar Number Program in Java

A number is called Capricorn or Kaprekar number whose square is divided into two parts in any conditions and parts are added, the additions of parts is equal to the number, is called Capricorn or Kaprekar number.

Example: 45

45 =  (45)2 = 2025
2025
 All parts for 2025:-
 202 + 5 = 207 (not 45)
 20 + 25 = 45
 2 + 025 = 27 (not 45)
Above we can see one combination is equal to number so that 45 is Capricorn or Kaprekar number.

LCM and HCF of two numbers Program in C

/*Program to find the LCM and HCF of two numbers*/ #include<stdio.h> int main(void) { int x,y,a,b; printf(“Enter two numbers : “); scanf(“%d%d”,&x,&y); a=x; b=y; while(a!=b) { if(ab) a=a-b; else b=b-a; } printf(“HCF of %d and %d is %d\n”,x,y,a); return 0; } Output: Enter two numbers : 36 48 LCM of 36 and 48 is 144 […]

Find day of week from a given date Program in C

/*P5.41 Program to find day of week from a given date*/ #include<stdio.h> int main(void) { int d,m,y,j,f,h,fh,day; printf(“Enter date(dd/mm/yyyy): “); scanf(“%d/%d/%d”,&d,&m,&y); j=d; switch(m-1) { case 11: j+=30; /*Fall thru in all cases*/ case 10: j+=31; case 9: j+=30; case 8: j+=31; case 7: j+=31; case 6: j+=30; case 5: j+=31; case 4: j+=30; case 3: […]

Difference of two dates in years, months, days Program in C

/*Program to get difference of two dates in years, months, days*/ #include<stdio.h> int main(void) { int d1,d2,d,m1,m2,m,y1,y2,y; printf(“Enter first date(dd/mm/yyyy): “); scanf(“%d/%d/%d”,&d1,&m1,&y1); printf(“Enter second date(dd/mm/yyyy): “); scanf(“%d/%d/%d”,&d2,&m2,&y2); if(d2<d1) { if(m2==3) { if(y2%100!=0 && y2%4==0 || y2%400==0) /*check for leap year*/ d2=d2+29; else d2=d2+28; } else if(m2==5 || m2==7 || m2==10 || m2==12) d2=d2+30; else d2=d2+31; […]

Check whether a date is valid or not Program in C

/*Program to check whether a date is valid or not*/ #include<stdio.h> int main(void) { int d,m,y; int flag=1,isleap=0; printf(“Enter date(dd/mm/yyyy): “); scanf(“%d/%d/%d”,&d,&m,&y); if(y%100!=0 && y%4==0 || y%400==0) isleap=1; if(y2050 || m12 || d31) flag=0; else if(m==2) /*Check for number of days in February*/ { if(d==30 || d==31 || (d==29 && !isleap) ) flag=0; } else […]

Menu driven Program in C

/*P5.36 A menu driven program using infinite loop and switch*/ #include<stdio.h> int main(void) { int choice; while(1) { printf(“1.Create database\n”); printf(“2.Insert new record\n”); printf(“3.Modify a record\n”); printf(“4.Delete a record\n”); printf(“5.Display all records\n”); printf(“6.Exit\n”); printf(“Enter your choice : “); scanf(“%d”,&choice); switch(choice) { case 1: printf(“Database created…..\n\n”); break; case 2: printf(“Record inserted…..\n\n”); break; case 3: printf(“Record modified…..\n\n”); […]

Vowel or consonant Program in C

/*P5.35 Program to find whether the alphabet is a vowel or consonant*/ #include<stdio.h> int main(void) { char ch; printf(“Enter an alphabet : “); scanf(“%c”,&ch); switch(ch) { case ‘a’: case ‘e’: case ‘i’: case ‘o’: case ‘u’: printf(“Alphabet is a vowel\n”); break; default: printf(“Alphabet is a consonant\n”); } return 0; } Output: Enter an alphabet : […]

Perform arithmetic calculations on integers Program in C

/*Program to perform arithmetic calculations on integers*/ #include<stdio.h> int main(void) { char op; int a,b; printf(“Enter number,operator and another number : “); scanf(“%d%c%d”,&a,&op,&b); switch(op) { case ‘+’: printf(“Result = %d\n”,a+b); break; case ‘-‘: printf(“Result = %d\n”,a-b); break; case ‘*’: printf(“Result = %d\n”,a*b); break; case ‘/’: printf(“Result = %d\n”,a/b); break; case ‘%’: printf(“Result = %d\n”,a%b); break; […]

Multiply two positive numbers without using “*” operator

/*Multiply two positive numbers without using * operator*/ #include<stdio.h> int main(void) { int a,b,i; int result=0; printf(“Enter two numbers to be multiplied : “); scanf(“%d%d”,&a,&b); for(i=1; i

Count digits Program in C

/*Program to count digits in a number */ #include<stdio.h> int main(void) { int n,count=0,rem; printf(“Enter a number : “); scanf(“%d”,&n); do { n/=10; count++; }while(n>0); printf(“Number of digits=%d\n”,count); return 0; } Output: Enter a number : 24512 Number of digits=5