diff options
author | justanothercatgirl <sotov@twistea.su> | 2024-09-18 17:15:55 +0300 |
---|---|---|
committer | justanothercatgirl <sotov@twistea.su> | 2024-09-18 17:15:55 +0300 |
commit | 18b8726791c5fd3181edda73416f6ddaf302c321 (patch) | |
tree | c5faf3cca9f0bd389050b323d147cbbf4162a898 /main.c | |
parent | 2161762fdebf0dfeb6714b658e853550aa3524c4 (diff) |
2 versions now
Diffstat (limited to 'main.c')
-rw-r--r-- | main.c | 59 |
1 files changed, 0 insertions, 59 deletions
@@ -1,59 +0,0 @@ -#include <stdlib.h> -#include <stdio.h> -#include <time.h> -#include <math.h> - -#define GEN_MAX 1000000 - -static int tenpow(int pow) { - int base = 10; - int ret = 1; - while (pow) { - if (pow & 0b1) - ret *= base; - base *= base; - pow >>= 1; - } - return ret; -} - -static char get_at_pos(unsigned int n, int pos) { - n /= tenpow(pos); - return n % 10; -} - -int main(int argc, char *argv[]) { - srand(time(NULL)); - int arr[10] = {0}; - unsigned int gen; - - int iters, pos; - if (argc == 3) { - iters = atoi(argv[1]); - pos = atoi(argv[2]); - if (!iters || !pos) goto fail; - } else { - fputs("Iterations: ", stdout); - if (!scanf("%i", &iters)) goto fail; - fputs("Position (10^N): ", stdout); - if (!scanf("%i", &pos)) goto fail; - } - - for (int _ = 0; _ < iters; ++_) { - gen = rand() % GEN_MAX; -#ifdef PRINT_GENERATED - printf("%i\n", gen); -#endif - ++arr[get_at_pos(gen, pos)]; - } - - printf("count of numbers at position %i:\n", pos); - for (int i = 0; i < 10; ++i) - printf("\t%i: %i\n", i, arr[i]); - - return EXIT_SUCCESS; -fail: - fputs("Input a valid number\n", stderr); - return EXIT_FAILURE; -} - |