Example Analysis of Array overflow in C language

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1. When the length of the array is larger than that defined by us, the length of the array will have the problem of array overflow.

2. When the array overflows, the compiler reports an error at compile time. A normal array overflow means that the extra part of the array is discarded when it is output.

However, if the array overflows as a string, the compiler may pass normally when we still output the array, but the output is not normal. Therefore, when defining arrays and assigning values to arrays, we should be careful to avoid array overflows.

Example

# include#includevoid main () {unsigned char a [3] = {0}; a [0] = 200; a [1] = 200; a [2] = a [0] + a [1]; / / unsigned char value range: 0x255, out of range printf ("aVV% d bRV% d cRV% d\ n", a [0], a [1], a [2]); system ("pause") } / * output: aVERV 200 bRV 200 cRV 144 Please press any key to continue. . . * / above is all the content of the article "sample Analysis of Array overflow in C language". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!