How Can I Zero-Pad Numbers in Go's Print Statements?

Zero Padding Numbers in Print Statements

When printing numbers, it is often useful to make them fixed width by adding leading zeros. For instance, if you have the number 12 and want to make it 000012.

The fmt package in Go provides a convenient way to do this. Simply use the format specifier d. The 0 indicates that the number should be padded with zeros, and the 6 specifies the desired width. For example:

fmt.Printf("|%06d|%6d|\n", 12, 345)

Output:

|000012|   345|

Note that if the number is too long to fit in the specified width, it will be truncated. For example, if you try to print the number 1234567 with a width of 6, the output will be:

|123456|

In this case, the leading zeros are truncated.

You can also use the fmt package to pad numbers with spaces instead of zeros. To do this, simply use the format specifier m. For example:

fmt.Printf("|%6d|%6d|\n", 12, 345)

Output:

|   12|   345|

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