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Home/ Questions/Q 6620229
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T21:04:17+00:00 2026-05-25T21:04:17+00:00

Why does this work printf(Hello World); Whereas printf(Hello World); does not? ANSI C concatenates

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Why does this work

printf("Hello"
"World");

Whereas

printf("Hello
""World");

does not?
ANSI C concatenates adjacent Strings, that’s ok… but it’s a different thing.
Does this have something to do with the C language parser or something?
Thanks

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  1. Editorial Team
    Editorial Team
    2026-05-25T21:04:18+00:00Added an answer on May 25, 2026 at 9:04 pm

    The string must be terminated before the end of the line. This is a good thing. Otherwise, a forgotten close-quote could prevent subsequent lines of code from executing.

    This could cost significant time to debug. These days syntax coloring would provide a clue, but in the early years there were monochrome displays.

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