Why does the C language print format printf("%.4d ",123) output 0 123? - Plastic Surgery and Aesthetics Network

Why does the C language print format printf("%.4d ",123) output 0 123?

Equivalent to printf("%04d ",123).

It means to output 4-bit shaping.

%04d means that when the number is less than 4 digits, it will be preceded by 0, making its total width 4 digits.

Remember, you can check the format of msdn's printf in detail.

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