Judged within 100,000, an integer plus 100 is a complete square number, plus 168 is a complete square number, which is calculated

Title: An integer, which is a complete square after the number, plus 168 is a complete square number, what is the number?

Program analysis: In the judgment within the million, first of all, add the number after the prescription, and then add the number plus 268 after the root , if the result of the root to meet the following conditions , which is the result.

Program Source code:

#include <stdio.h>

#include <math.h>

int main ()

{

long int i, x, y;

for (i = 1; i<100000; i++)

{

x = sqrt (i + 100);

y = sqrt (i + 268);

if (x*x = = i + +) && (Y*y = = i + 268)/* * If the square root of a number equals that number, this indicates that the number is the total square number */

{

printf ("%ld\n", I);

}

}

System ("pause");

return 0;

}

Operation Result:

21st

261

1581

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Judged within 100,000, an integer plus 100 is a complete square number, plus 168 is a complete square number, which is calculated