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C Language > Learn C Language > Why does an array index always start with zero? Why...
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Why does an array index always start with zero? Why doesn’t it start with 1 in the C language?

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Some languages, like Python (Welcome to Python.org) allow negative array indices to indicate the nth element from the end, and in this case, -1 indicates the last element not the "last minus one" element. In the C language, v is the same as *(v+0) because that is easiest to compile, maps most directly...
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Some languages, like Python (Welcome to Python.org) allow negative array indices to indicate the nth element from the end, and in this case, -1 indicates the last element not the "last minus one" element. In the C language, v[0] is the same as *(v+0) because that is easiest to compile, maps most directly to how hardware works, and avoids certain kinds of off-by-one errors when working interchangeably with pointers and array subscripts.Moreover its just an another rule thats it. read less
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The first element of the array is exactly contained in the memory location that array refers (0 elements away), so it should be denoted as array. In C, the name of an array is essentially a pointer, a reference to a memory location, and so the expression array refers to a memory location n-elements...
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The first element of the array is exactly contained in the memory location that array refers (0 elements away), so it should be denoted as array[0]. In C, the name of an array is essentially a pointer, a reference to a memory location, and so the expression array[n] refers to a memory location n-elements away from the starting element. This means that the index is used as an offset. read less
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