init

.gitignore

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+ascii-table

Makefile

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+all:
+	gcc -Wall -Wextra main.c -o ascii-table
+
+run: all
+	./ascii-table

main.c

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+#include <stdio.h>
+#include <string.h>
+
+int is_char(char c)
+{
+    return c >= 32 && c <= 126;
+}
+
+char* char_name(char c)
+{
+    c %= 128;
+
+    static char buff[2] = {0};
+
+    switch (c) {
+        case 0: return "null";
+        case 1: return "start of heading";
+        case 2: return "start of text";
+        case 3: return "end of text";
+        case 4: return "end of transmission";
+        case 5: return "enquiry";
+        case 6: return "aknowledge";
+        case 7: return "bell";
+        case 8: return "backspace";
+        case 9: return "horizontal tab";
+        case 10: return "line feed";
+        case 11: return "vertical tab";
+        case 12: return "form feed";
+        case 13: return "carriage return";
+        case 14: return "shift out";
+        case 15: return "shift in";
+        case 16: return "data link escape";
+        case 17: return "device control 1";
+        case 18: return "device control 2";
+        case 19: return "device control 3";
+        case 20: return "device control 4";
+        case 21: return "negative aknowledge";
+        case 22: return "synchronious idle";
+        case 23: return "end of trans. block";
+        case 24: return "cancel";
+        case 25: return "end of medium";
+        case 26: return "substitute";
+        case 27: return "escape";
+        case 28: return "file seperator";
+        case 29: return "group seperator";
+        case 30: return "record seperator";
+        case 31: return "unit seperator";
+        case 127: return "del";
+        default: buff[0] = c; return buff;
+    }
+
+    return "wtf?";
+}
+
+int main()
+{
+    printf("Dec\tHex\tChar                  | ");
+    printf("Dec\tHex\tChar | ");
+    printf("Dec\tHex\tChar | ");
+    printf("Dec\tHex\tChar\n");
+    printf("--------------------------------------+");
+    printf("----------------------+");
+    printf("-----------------------+");
+    printf("------------------------\n");
+    int nb_column = 4;
+    int u = 128/nb_column;
+    for (int i = 0; i < u; i++) {
+        char c;
+        char* s;
+
+        c = u*0+i;
+        s = char_name(c);
+        printf("%d\t%x\t[%s] ", c, c, s);
+        for (size_t y = 0; y < 19 - strlen(s); y++) {
+            printf(" ");
+        }
+        printf("| ");
+
+        c = u*1+i;
+        s = char_name(c);
+        printf("%d\t%x\t[%s]  | ", c, c, s);
+
+        c = u*2+i;
+        s = char_name(c);
+        printf("%d\t%x\t[%s]  | ", c, c, s);
+
+        c = u*3+i;
+        s = char_name(c);
+        printf("%d\t%x\t[%s]\n",   c, c, s);
+    }
+}