I have a vector like this:
int nums[10] + {1235, 14627, 1625161, 54437};
Always the element will be greater than or equal to 1000, that is, with a length equal to 4, and can be extended up to 10 digits. I want to know how I get the length of these integers from my vector. That is, using the example vector, I have the first element that has 4, others with 5, 7 and 5 respectively. But how do I get the length by the code?
So suddenly I see two ways: by converting to string or by using the function log() .
#include <string.h> // para strlen()
int nums[] = {1235, 14627, 1625161, 54437};
for (int k = 0; k < sizeof nums / sizeof *nums; k++) {
char tmp[12];
sprintf(tmp, "%d", nums[k]);
printf("O numero %d tem comprimento %d.\n", nums[k], (int)strlen(tmp));
}
or
#include <math.h> // para log()
int nums[] = {1235, 14627, 1625161, 54437};
for (int k = 0; k < sizeof nums / sizeof *nums; k++) {
printf("O numero %d tem comprimento %d.\n", nums[k], (int)log10(nums[k]) + 1);
}