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45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
/* Perfect Square - Program to find four digit perfect squares, where the number represented by the first two digits and the number represented by the last two digits are also perfect squares. */
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/* For eg 1681=41^2 16=4^2 81=9^2 */
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#include <stdio.h>
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#include <conio.h>
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#include <math.h>
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void main()
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{
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int n, n1, n2, i, flag1, flag2, flag3 ;
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clrscr() ;
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printf("Four digit perfect squares with required property are as shown:\n");
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for(n=1000 ; n<=9999 ; n++)
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{
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n1=n%100 ; /*Extracting last two digits*/
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n2=n/100 ; /*Extracting first two digits*/
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/*Checking whether the first two digits are perfect squares*/
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flag1=0 ;
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i=sqrt(n2) ; /* Remember i is integer whereas sqrt() returns double */
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if(n2==i*i)
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flag1=1 ;
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/*Checking whether the last two digits are perfect squares*/
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flag2=0 ;
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i=sqrt(n1) ;
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if(n1==i*i)
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flag2=1 ;
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/*Checking whether the number itself is a perfect square*/
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flag3=0 ;
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i=sqrt(n) ;
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if(n==i*i)
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flag3=1 ;
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if(flag1==1 && flag2 ==1 && flag3==1)
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printf("%d ", n) ;
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}
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getch() ;
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}
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/*
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Output
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Four digit perfect squares with required property are as shown:
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1600 1681 2500 3600 4900 6400 8100
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*/
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