#define __STDC_WANT_LIB_EXT1__1
#include <string.h>
#include <stdio.h>
int main(void)
{
char preamble [] = "The joke is:\n\n";
char str[][40] = {
"My dog hasn\'t got any nose.\n",
"How does your dong smell then?\n",
"My dog smells horrible.\n"
};
unsigned int strCount = sizeof(str)/sizeof(str[0]);
unsigned int length = 0;
for(unsigned int i = 0 ; i < strCount ; ++i)
length += strnlen_s(str,sizeof(str));
char joke[length + strnlen_s(preamble,sizeof(preamble)) + 1];
if(strncpy_s(joke, sizeof(joke), preamble, sizeof(preamble)))
{
printf("Error copying preamble to joke.\n");
return 0;
}
for(unsigned int i = 0 ; i < strCount ; ++i)
{
if(strncat_s(joke, sizeof(joke), str, sizeof(str)))
{
printf("Error copying string str[%u].",i);
return 2;
}
}
printf("%s", joke);
return 0;
}
然后gcc编译的时候出了问题：
