I am trying to convert a substring to integer but I am getting this output
int main()
{
char buf[50] = "210-567-12-2040-34567890.txt";
char* pStart = buf;
char* pCurrent = buf;
while(*pCurrent != '\0')
{
if (*pCurrent == '-' || *pCurrent == '.')
{
uint32_t val = strtoul(pStart, NULL, 10);
pStart = pCurrent+1;
printf("%ul\n",val);
}
++pCurrent;
}
return 0;
}
I am getting this output
210l
567l
12l
2040l
34567890l
Why is there a l in it?
Some of the answers here are what you're looking for: What is the difference between char s[] and char *s?
Short answer is there's no difference between the two as a function argument. You can pass the char* pStart variable into strtoul the same as you'd pass the char str[20] variable into it. This will make it read the string directly from whatever memory address pStart points to, no need to copy into an array first.
