Multiplication tables: Difference between revisions

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 =={{header|C}}==
-<lang c>#include <math.h>
+<lang c>#include <stdio.h>
-#include <stdio.h>
+int main()
-int main(int argc, char *argv[])
 {
-    int max = 12;
+	int i, j, n = 12;
-    const char *format = " %*d";
+	for (j = 1; j <= n || !putchar('\n'); j++) printf("%3d ", j);
-    const char *format2 = "%*s%c";
+	for (j = n * 4;  j || !putchar('\n'); j--) putchar('-');
-    int	dgts;
-    int i,j;
-    dgts = (int)(.99+ log10(1.0*max*max));
-    printf(format2, dgts, "",'x');
-    for (i=1; i <= max; i++) printf(format, dgts, i);
-    printf("\n\n");
-    for (j=1; j<=max; j++) {
-      printf(format, dgts, j);
-      for(i=1; i<j; i++) printf(format2, dgts, "",' ');
-      for(i=j; i<=max; i++) printf(format, dgts, i*j);
-      printf("\n");
-    }
-    printf("\n");
-    return 0;
-}</lang>
-Output:
-<pre>   x   1   2   3   4   5   6   7   8   9  10  11  12
+	for (i = 1; i <= 12; printf("| %d\n", i), i++)
-1   2   3   4   5   6   7   8   9  10  11  12
+		for (j = 1; j <= 12; j++)
-4   6   8  10  12  14  16  18  20  22  24
+			if (j < i) printf("    ");
-9  12  15  18  21  24  27  30  33  36
+			else	   printf("%3d ", i * j);
-16  20  24  28  32  36  40  44  48
-25  30  35  40  45  50  55  60
-36  42  48  54  60  66  72
-49  56  63  70  77  84
-64  72  80  88  96
-81  90  99 108
-100 110 120
-121 132
-144
+	return 0;
-</pre>
+}</lang>output<lang>  1   2   3   4   5   6   7   8   9  10  11  12
+------------------------------------------------
+2   3   4   5   6   7   8   9  10  11  12 | 1
+6   8  10  12  14  16  18  20  22  24 | 2
+12  15  18  21  24  27  30  33  36 | 3
+20  24  28  32  36  40  44  48 | 4
+30  35  40  45  50  55  60 | 5
+42  48  54  60  66  72 | 6
+56  63  70  77  84 | 7
+72  80  88  96 | 8
+90  99 108 | 9
+110 120 | 10
+132 | 11
+| 12</lang>
 =={{header|C++}}==