Arjun Suresh (talk | contribs) |
Arjun Suresh (talk | contribs) |
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Line 16: | Line 16: | ||
int *a; | int *a; | ||
</syntaxhighlight> | </syntaxhighlight> | ||
− | This declares a as an integer pointer, meaning a can point to | + | This declares a as an integer pointer, meaning 'a' can point to any memory address which contains an int |
<syntaxhighlight lang="c"> | <syntaxhighlight lang="c"> |
<syntaxhighlight lang="c">
int main() {
int *a; *a=5; printf("%d",a);
return 0;
}
</syntaxhighlight>
<syntaxhighlight lang="c"> int *a; </syntaxhighlight> This declares a as an integer pointer, meaning 'a' can point to any memory address which contains an int
<syntaxhighlight lang="c">
</syntaxhighlight> This makes the content of the address pointed to by a 5. But a is not pointing to any valid address (int *a assigns garbage value to a) and hence this assignment can cause segmentation fault
<syntaxhighlight lang="c">
int main() {
int *a; *a=5; printf("%d",a);
return 0;
}
</syntaxhighlight>
<syntaxhighlight lang="c"> int *a; </syntaxhighlight> This declares a as an integer pointer, meaning 'a' can point to any memory address which contains an int
<syntaxhighlight lang="c">
</syntaxhighlight> This makes the content of the address pointed to by a 5. But a is not pointing to any valid address (int *a assigns garbage value to a) and hence this assignment can cause segmentation fault