Web Reference: May 29, 2016 · The term subscript refers to the application of [] operator. In your word[0], the [0] part is a subscript. The built-in [] operator can only be used with arrays or pointers. You are trying to use it with an object of type char (your word is declared as char), which is neither an array nor a pointer. This is what the compiler is telling you. Aug 4, 2025 · The subscript was used on a variable that was not an array. The following example generates C2109: int a, b[10] = {0}; a[0] = 1; // C2109 . b[0] = 1; // OK . Dec 3, 2018 · Your error is that you are attempting to use matricNum as an array (by accessing it as matricNum [i]), but matricNum is simple an int. Perhaps you meant to use numb instead of matricNum?
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