C - I see code like ...

I see code like ...

Q

I see code like
char *p = malloc(strlen(s) + 1);
strcpy(p, s);

Shouldn't that be malloc((strlen(s) + 1) * sizeof(char))?

✍: Guest

A

It's never necessary to multiply by sizeof(char), since sizeof(char) is, by definition, exactly 1. (On the other hand, multiplying by sizeof(char) doesn't hurt, and in some circumstances may help by introducing a size_t into the expression;

2016-06-21, 1255👍, 0💬

In a call to malloc, what does an error like
In a call to malloc, what does an error like ``Cannot convert `void *' to `int *''' mean? It means you're using a C++ compiler instead of a C compiler. 2016-06-21, 1407👍, 0💬

I wrote a little wrapper around malloc ...
I wrote a little wrapper around malloc, but it doesn't work: #include lt;stdio.h> #include lt;stdlib.h> mymalloc(void *retp, size_t size) { retp = malloc(size); if(retp == NULL) { fprintf(stderr, "out of memory\n"); exit(EXIT_FAILURE); } } Are you sure the function initialized what you thought it di... 2016-06-10, 1294👍, 0💬

I see code like ...
I see code like char *p = malloc(strlen(s) + 1); strcpy(p, s); Shouldn't that be malloc((strlen(s) + 1) * sizeof(char))? It's never necessary to multiply by sizeof(char), since sizeof(char) is, by definition, exactly 1. (On the other hand, multiplying by sizeof(char) doesn't hurt, and in some circum... 2016-06-21, 1256👍, 0💬

interview.FYIcenter.com Links
Other Resources: Software QA Resources Developer Resources DBA Resources Windows Tutorials Java JAR Files DLL Files File Extensions Security Certificates Regular Expression Link Directories Interview Q & A Biotech Resources Cell Phone Resources Travel Resources Frequently Asked Questions FYI... 2018-12-21, 537👍, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.