Here is my code.
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
void format(char s[]) {
int i = 0;
while(isdigit(s[i])) {
i++;
}
if (s[i] == '.') {
while (s[i]) {
s[i] = s[i + 1];
i++;
}
}
else {
s[i++] = '0';
s[i++] = '0';
s[i] = '\0';
}
}
int main(void) {
int i, n ...