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C Language > Learn C Language > Is it valid to address one element beyond the end of...
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Is it valid to address one element beyond the end of an array?

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C Language Trainer

No, array is a fixed size memory allocation for variables. It is illegal to access elements beyond the allocated space.
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Thank You for the question Shivani, No for an array you cannot go beyond the size of an array. Thanks, Team DishaaPro www.dishaapro.com
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Computer & Maths Professor

Yes. We can refer to an element beyond array size as C follows the following formula to go to a specific element in an array- starting address of array + sizeof(datatype of array)*subscript of array used. For example, if there is an int (assuming 2 bytes storage space for int) array of size 5 starting...
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Yes. We can refer to an element beyond array size as C follows the following formula to go to a specific element in an array- starting address of array + sizeof(datatype of array)*subscript of array used. For example, if there is an int (assuming 2 bytes storage space for int) array of size 5 starting from address say, 100 and the user tries to access a[5], C compiler would move to 100+2*5 i.e. address 110 irrespective of the subscript number as array elements are stored continuously in memory. read less
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COMPUTER GEEK

No for an array you can not go beyond the size of array as you may be entering into restricted area and may result in segmentation fault. Only C99 allows to have the size of address at runtime
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C and linux Expert

It's valid to address it, but not to see what's there.
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LearnHowToLearn, Expert In Programming Languages

No. It is invalid even if there won't be any compilation error. Accessing elements beyond array size is illegal memory access may cause segmentation fault runtime.
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Not a great idea, you will be accessing memory which doesn't belong to you or your array, may be used by some other variable with some other meaning/view.
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VKTechnology

no. outof bound array exception occurs
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website and mobile application development training, digital marketing training

No
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GeeksForGeeks

C language do not perform any bounds check on array during run time, so it will not give any error if you are doing so. But technically its not right to do so, because the memory location you are using or manipulating anything may contain some very sensitive information, which may other program are...
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C language do not perform any bounds check on array during run time, so it will not give any error if you are doing so. But technically its not right to do so, because the memory location you are using or manipulating anything may contain some very sensitive information, which may other program are using, can lead to crash the program or machine itself.. read less
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