Formatting output is one of Go’s most practical tools — especially when you’re printing totals, diagnostics, or structured values.

 

Printing and Formatting in Go

Formatting output is one of Go’s most practical tools — especially when you’re printing totals, diagnostics, or structured values. Go’s Printf function gives you precise control over numbers, alignment, and readability.

Source Code

fmt.Printf("total: %d items (avg: %.2f)\n", count, average)

Pseudocode

# import fmt
# call Printf with formatting verbs
# %d formats an integer
# %.2f formats a float with two decimal places
# \n adds a newline at the end

• Formatting verbs — %d prints integers, %.2f prints floats with fixed precision.
• Precision control — %.2f ensures consistent decimal formatting.
• Newline behavior — Printf does not add a newline unless you include \n.
• Structured output — useful for logs, summaries, and metrics.

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Expected Output

total: 12 items (avg: 3.75)

Formatted printing is a core Go pattern: once you understand how verbs work, you can cleanly print slices, structs, diagnostics, and aligned tables without extra libraries.

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