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A.15 Formatting output
We show how to insert the result of a computation inside a text by using strings. First we compute the powers of 2 and comment the result with some text. Then we do the same and give the output a nice format by computing and adding appropriate space.
// The powers of 2:
int n;
for (n = 2; n <= 128; n = n * 2)
{"n = " + string (n);}
→ n = 2
→ n = 4
→ n = 8
→ n = 16
→ n = 32
→ n = 64
→ n = 128
// The powers of 2 in a nice format
int j;
string space = "";
for (n = 2; n <= 128; n = n * 2)
{
space = "";
for (j = 1; j <= 5 - size (string (n)); j = j+1)
{ space = space + " "; }
"n =" + space + string (n);
}
→ n = 2
→ n = 4
→ n = 8
→ n = 16
→ n = 32
→ n = 64
→ n = 128
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