Idoneal numbers: Difference between revisions
Added C
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{{out}}
<pre>Same as the original entry FreeBASIC.</pre>
=={{header|C}}==
{{trans|Raku}}
<syntaxhighlight lang="c">#include <stdio.h>
#include <stdbool.h>
bool isIdoneal(int n) {
int a, b, c, sum;
for (a = 1; a < n; ++a) {
for (b = a + 1; b < n; ++b) {
if (a*b + a + b > n) break;
for (c = b + 1; c < n; ++c) {
sum = a*b + b*c + a*c;
if (sum == n) return false;
if (sum > n) break;
}
}
}
return true;
}
int main() {
int n, count = 0;
for (n = 1; n <= 1850; ++n) {
if (isIdoneal(n)) {
printf("%4d ", n);
if (!(++count % 13)) printf("\n");
}
}
return 0;
}</syntaxhighlight>
{{out}}
<pre>
1 2 3 4 5 6 7 8 9 10 12 13 15
16 18 21 22 24 25 28 30 33 37 40 42 45
48 57 58 60 70 72 78 85 88 93 102 105 112
120 130 133 165 168 177 190 210 232 240 253 273 280
312 330 345 357 385 408 462 520 760 840 1320 1365 1848
</pre>
=={{header|C#|CSharp}}==
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