Data commit

Task/Nth/C/nth-1.c

@@ -0,0 +1,52 @@
+#include <stdio.h>
+
+char* addSuffix(int num, char* buf, size_t len)
+{
+    char *suffixes[4] = { "th", "st", "nd", "rd" };
+    int i;
+
+    switch (num % 10)
+    {
+        case 1 : i = (num % 100 == 11) ? 0 : 1;
+	         break;
+        case 2 : i = (num % 100 == 12) ? 0 : 2;
+                 break;
+        case 3 : i = (num % 100 == 13) ? 0 : 3;
+                 break;
+        default: i = 0;
+    };
+
+    snprintf(buf, len, "%d%s", num, suffixes[i]);
+    return buf;
+}
+
+int main(void)
+{
+    int i;
+
+    printf("Set [0,25]:\n");
+    for (i = 0; i < 26; i++)
+    {
+        char s[5];
+        printf("%s ", addSuffix(i, s, 5));
+    }
+    putchar('\n');
+
+    printf("Set [250,265]:\n");
+    for (i = 250; i < 266; i++)
+    {
+        char s[6];
+        printf("%s ", addSuffix(i, s, 6));
+    }
+    putchar('\n');
+
+    printf("Set [1000,1025]:\n");
+    for (i = 1000; i < 1026; i++)
+    {
+        char s[7];
+        printf("%s ", addSuffix(i, s, 7));
+    }
+    putchar('\n');
+
+    return 0;
+}

Task/Nth/C/nth-2.c

@@ -0,0 +1,33 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+static int digits(const int x) {
+    if (x / 10 == 0) return 1;
+    return 1 + digits(x / 10);
+}
+
+static char * get_ordinal(const int i) {
+    const int string_size = digits(i) + 3;
+    char * o_number = malloc(string_size);
+    char * ordinal;
+    if(i % 100 >= 11 && i % 100 <= 13) ordinal = "th";
+    else ordinal = i/10==1?"th":i%10==1?"st":i%10==2?"nd":i%10==3?"rd":"th";
+    sprintf_s(o_number, string_size, "%d%s", i, ordinal);
+    return o_number;
+}
+
+static void print_range(const int begin, const int end) {
+    printf("Set [%d,%d]:\n", begin, end);
+    for (int i = begin; i <= end; i++) {
+        char * o_number = get_ordinal(i);
+        printf("%s ", o_number);
+        free(o_number);
+    }
+    printf("\n");
+}
+
+int main(void) {
+    print_range(0, 25);
+    print_range(250, 265);
+    print_range(1000, 1025);
+}