About a dead loop after an array is out of bounds

Source: Internet
Author: User

<span style= "FONT-SIZE:18PX;" > #include <stdio.h>void main () {int I=0;int a[5];for (i = 0; I <= 5; i++) {A[i] =-i;printf ("a[%d] =%d\n", I, a [i]);}} </span>


Analyze the above code, what is the result of execution? Can you compile the past? Is there a result? What was the result?

After compiling the run, it is found that the program is ready to run.

To analyze this program, fix the program:

<span style= "FONT-SIZE:18PX;" >void Main () {int I=0;int a[5]={0,0,0,0,0};for (i = 0; I <= 5; i++) {A[i] =-i;printf ("a[%d] =%d\n", I, a[i]); if (i== 4) {printf ("%p\n", &i);p rintf ("%p\n", &a[0]);p rintf ("%p\n", &a[1]);p rintf ("%p\n", &a[2]);p rintf ("%p \ n ", &a[3]);p rintf ("%p\n ", &a[4]); while (1);}} </span>

After running:


Using the above running results, draw the memory graph as follows:



Why use the while (1) dead loop? Because the program actually becomes a dead loop, it uses a dead loop to observe the results.




About a dead loop after an array is out of bounds

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