I am struggling to understand what's happening when I use strcat to join two variables, which results in the desired char array plus the undesirable change to a different char array. I've reduced the problem to the code example below. Normally, the #define is in another file for security purposes. …

you need to allocate enough memory for the strcat to not overflow your buffer.... when you do char wxAPI[] = "/dowxstuff/now?"; you only allocated in the wxAPI buffer enough bytes for the characters of "/dowxstuff/now?" (plus one hidden trailing null character). so whatever you try to add at the …

Strcat changing the wrong variable

Projects Programming

johnwasser October 27, 2021, 5:12pm 3

Try:
char wxAPI[30] = "/dowxstuff/now?";

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Strcat changing the wrong variable

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