C program to print the four digit numbers whose sum of squares of first half and second half of the number equals the same number

Write a C program to print the four digit numbers whose sum of squares of first half and second half of the number equals the same number.

  #include <stdio.h>
  int main() {
        int i = 1000, fhalf, shalf, fsquare, ssquare;

        /* print if square of 1st and 2nd half are same */
        while (i < 10000) {
                shalf = i % 100;
                fhalf = i / 100;
                ssquare = shalf * shalf;
                fsquare = fhalf * fhalf;
                if (fsquare == ssquare) {
                        printf("%d => (%d)^2 equals to (%d)^2\n",
                                i, fhalf, shalf);
                }
                i++;
        }
        return 0;
  }

  Output:

  jp@jp-VirtualBox:~/$ ./a.out
  1010 => (10)^2 equals to (10)^2
  1111 => (11)^2 equals to (11)^2
  1212 => (12)^2 equals to (12)^2
  1313 => (13)^2 equals to (13)^2
  1414 => (14)^2 equals to (14)^2
  1515 => (15)^2 equals to (15)^2
  1616 => (16)^2 equals to (16)^2
  1717 => (17)^2 equals to (17)^2
  1818 => (18)^2 equals to (18)^2
  1919 => (19)^2 equals to (19)^2
  2020 => (20)^2 equals to (20)^2
  2121 => (21)^2 equals to (21)^2
  2222 => (22)^2 equals to (22)^2
  2323 => (23)^2 equals to (23)^2
  2424 => (24)^2 equals to (24)^2
  2525 => (25)^2 equals to (25)^2
  2626 => (26)^2 equals to (26)^2
  2727 => (27)^2 equals to (27)^2
  2828 => (28)^2 equals to (28)^2
  2929 => (29)^2 equals to (29)^2
  3030 => (30)^2 equals to (30)^2
  3131 => (31)^2 equals to (31)^2
  3232 => (32)^2 equals to (32)^2
  3333 => (33)^2 equals to (33)^2
  3434 => (34)^2 equals to (34)^2
  3535 => (35)^2 equals to (35)^2
  3636 => (36)^2 equals to (36)^2
  3737 => (37)^2 equals to (37)^2
  3838 => (38)^2 equals to (38)^2
  3939 => (39)^2 equals to (39)^2
  4040 => (40)^2 equals to (40)^2
  4141 => (41)^2 equals to (41)^2
  4242 => (42)^2 equals to (42)^2
  4343 => (43)^2 equals to (43)^2
  4444 => (44)^2 equals to (44)^2
  4545 => (45)^2 equals to (45)^2
  4646 => (46)^2 equals to (46)^2
  4747 => (47)^2 equals to (47)^2
  4848 => (48)^2 equals to (48)^2
  4949 => (49)^2 equals to (49)^2
  5050 => (50)^2 equals to (50)^2
  5151 => (51)^2 equals to (51)^2
  5252 => (52)^2 equals to (52)^2
  5353 => (53)^2 equals to (53)^2
  5454 => (54)^2 equals to (54)^2
  5555 => (55)^2 equals to (55)^2
  5656 => (56)^2 equals to (56)^2
  5757 => (57)^2 equals to (57)^2
  5858 => (58)^2 equals to (58)^2
  5959 => (59)^2 equals to (59)^2
  6060 => (60)^2 equals to (60)^2
  6161 => (61)^2 equals to (61)^2
  6262 => (62)^2 equals to (62)^2
  6363 => (63)^2 equals to (63)^2
  6464 => (64)^2 equals to (64)^2
  6565 => (65)^2 equals to (65)^2
  6666 => (66)^2 equals to (66)^2
  6767 => (67)^2 equals to (67)^2
  6868 => (68)^2 equals to (68)^2
  6969 => (69)^2 equals to (69)^2
  7070 => (70)^2 equals to (70)^2
  7171 => (71)^2 equals to (71)^2
  7272 => (72)^2 equals to (72)^2
  7373 => (73)^2 equals to (73)^2
  7474 => (74)^2 equals to (74)^2
  7575 => (75)^2 equals to (75)^2
  7676 => (76)^2 equals to (76)^2
  7777 => (77)^2 equals to (77)^2
  7878 => (78)^2 equals to (78)^2
  7979 => (79)^2 equals to (79)^2
  8080 => (80)^2 equals to (80)^2
  8181 => (81)^2 equals to (81)^2
  8282 => (82)^2 equals to (82)^2
  8383 => (83)^2 equals to (83)^2
  8484 => (84)^2 equals to (84)^2
  8585 => (85)^2 equals to (85)^2
  8686 => (86)^2 equals to (86)^2
  8787 => (87)^2 equals to (87)^2
  8888 => (88)^2 equals to (88)^2
  8989 => (89)^2 equals to (89)^2
  9090 => (90)^2 equals to (90)^2
  9191 => (91)^2 equals to (91)^2
  9292 => (92)^2 equals to (92)^2
  9393 => (93)^2 equals to (93)^2
  9494 => (94)^2 equals to (94)^2
  9595 => (95)^2 equals to (95)^2
  9696 => (96)^2 equals to (96)^2
  9797 => (97)^2 equals to (97)^2
  9898 => (98)^2 equals to (98)^2
  9999 => (99)^2 equals to (99)^2

See Also:

• c program to print "Hello World"
• c program to print "Hello World" without using semicolon
• c program to swap two numbers
• c program to convert Celsius to Fahrenheit
• c program to convert Fahrenheit to Celsius
• c program to convert time in Hours:Minutes:Seconds to seconds
• c program to find the area of triangle given three sides
• c program to calculate Simple Interest
• c program to print multiplication table from 1 to n
• c program to check whether the given year is leap year or not
• c program to find the size of basic data types
• c program to find the area and circumference of a circle
• c program to find the roots of a quadratic equation
• c program to add two numbers
• c program to swap two numbers without using temporary variable
• c program to check whether the given number N is divisible by M
• c program to add two fractions
• c program to add two numbers without third variable
• c program to convert improper fraction to mixed fraction
• c program to convert centimeters to inches and feet
• c program to convert feet to inches
• c program to convert days into months and days
• c program to convert kilometers to miles, meters and feet
• c program to convert kilometer per hour to meter per second
• c program to convert kilograms to pounds and grams
• c program to convert minutes into hours
• c program to convert time in seconds to hours, minutes and seconds
• c program to convert hours, minutes to seconds
• c program to convert meter to feet and centimeters
• c program to convert plain to cipher text and cipher to plain text
• c program to convert pounds to kilograms
• c program to convert radians to degrees
• c program to convert year to roman equivalent
• c program to calculate compound interest
• c program to calculate power of a number
• c program to calculate factorial
• c program to find the area & perimeter of a circle, triangle, square and rectangle
• c program to calculate age in years, months and days
• c program to find absolute value of a given number
• c program to calculate age from date of birth
• c program to calculate body mass index
• c program to calculate distance between two points
• c program to calculate Greatest Common Divisor(GCD)
• c program to calculate Highest Common Factor(HCF)
• c program to calculate Least Common Multiple(LCM)
• c program to simplify the given fraction using GCF
• c program to calculate Gross and net salary of an employee
• c program to calculate Grades
• c program to calculate GPA
• c program to calculate income tax
• c program to calculate modulus
• c program to implement digital clock
• c program to calculate profit and loss
• c program to calculate percentage
• c program to calculate PI, resistance and power
• c program to calculate square root and square of a number
• c program to calculate volume of a cylinder and sphere
• c program to calculate weighted arithmetic mean
• c program to calculate x power y
• c program to check whether a date is valid or not
• c program to convert days into years, months and weeks
• c program to print date and sleep for a given time
• c program to clear screen and authenticate user
• c program to calculate generic root of any number
• c program to find largest digit of a number
• c program to generate multiplication table for the given number
• c program to convert decimal to binary and count the number of ones and zeros
• c program to round a number
• c program to guess a random number
• c program to implement ceaser cipher
• c program to swap nibble in a byte
• c program to find slope
• c program to calculate nCr and nPr
• c program to print even, odd and prime factors of a given number
• c program to print the four digit numbers whose sum of squares of first half and second half of the number equals the same number
• c program to check whether a given number is magic number or not
• c program to calculate correlation coefficient