CLion recommends to use 'strtol' instead of 'scanf' - c

Question

#include <stdio.h>
int main(int argc, char** argv) {
int num = 0;
printf("Input: ");
scanf("%d", &num); <<<
printf("%d\n", num);
return 0;
}
scanf("%d", &num);
Clang-Tidy: 'scanf' used to convert a string to an integer value, but function will not report conversion errors; consider using 'strtol' instead
I wrote a very simple code with CLion and it recommends me 'strtol' instead of 'scanf'.
But I'm using only integer variable and there is no strings. I can't figure out why the inspection message pops up.
How do I modify this code?

Answer 1

How do I modify this code?
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <limits.h>
enum { INPUT_SIZE = 30 };
int main () {
char *ptr;
long ret;
char str[INPUT_SIZE];
fgets(str, INPUT_SIZE, stdin);
ret = strtol(str, &ptr, 10);
if( ret == LONG_MAX || ret == LONG_MIN ) {
perror("!! Problem is -> ");
}
else if (ret) {
printf("The number is %ld\n", ret);
}
else {
printf("No number found input is -> %s\n", ptr);
}
return(0);
}
If successful, strtol() returns the converted long int value.
If unsuccessful, strtol() returns 0 if no conversion could be
performed. If the correct value is outside the range of representable
values, strtol() returns LONG_MAX or LONG_MIN, according to the sign
of the value. If the value of base is not supported, strtol()
returns 0.
If unsuccessful strtol() sets errno to one of the following values:
Error Codes:
EINVAL The value of base is not supported.
ERANGE The conversion caused an overflow.
Source : IBM
Can you check overflow using scanf() for example?
Input: 1234 stackoverflow
Output: The number is 1234
Input: 123nowhitespace
Output: The number is 123
Input: number is 123
Output: No number found input is -> number is 123
Input: between123between
Output: No number found input is -> between23between
Input: 9999999999999999999
Output: !! Problem is -> : Result too large
Maybe off-topic but, Jonathan Leffler says in his comments(in another topics) that handle warnings just as errors.