diff options
Diffstat (limited to 'mat/euler/12')
| -rw-r--r-- | mat/euler/12/Makefile | 2 | ||||
| -rwxr-xr-x | mat/euler/12/a.out | bin | 0 -> 8568 bytes | |||
| -rw-r--r-- | mat/euler/12/prog.c | 33 |
3 files changed, 35 insertions, 0 deletions
diff --git a/mat/euler/12/Makefile b/mat/euler/12/Makefile new file mode 100644 index 0000000..156bc0d --- /dev/null +++ b/mat/euler/12/Makefile @@ -0,0 +1,2 @@ +default: + gcc prog.c -lm diff --git a/mat/euler/12/a.out b/mat/euler/12/a.out Binary files differnew file mode 100755 index 0000000..37a4114 --- /dev/null +++ b/mat/euler/12/a.out diff --git a/mat/euler/12/prog.c b/mat/euler/12/prog.c new file mode 100644 index 0000000..7af0f37 --- /dev/null +++ b/mat/euler/12/prog.c @@ -0,0 +1,33 @@ +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +int main (int argc, char ** argv) { + if (argc != 1 + 1) { + fprintf(stderr, "uporaba: %s <stevilka>, \nprimer: %s 500\n", argv[0], argv[0]); + return 1; + } + unsigned long int n = strtol(argv[1], NULL, 10); + unsigned long long int i = 1; + unsigned long long int j = 0; + unsigned long long int d = 0; + unsigned long long int s = 0; // dejansko trikotniško število. + while (1) { + s = s+i; + fprintf(stderr, "\rpreizkušam število %lld ...", i); + d = 0; + for (j = 2; j < ceill(sqrtl(s)); j++) { + if (s % j == 0) + d++; + } + d = (d*2)+2; // dva dodamo, ker sta to število samo in 1 + if (d > n) { + fprintf(stdout, "\rnašel število %lld z %lld delitelji\n", s, d); + return 0; + } + i++; + if (i <= 1) // int rollover + break; + } + fprintf(stderr, "napaka. intager rollover pred najdenim rezultatom!\n"); + return 2; +} |