#include <stdio.h>
#include <stdint.h>
float custom_atof(const char *str) {
// Your logic here
float numerator = 0.0f;
float denominator = 1.0f;
bool neg = false;
bool dot = false;
while (*str != '\0') {
if (*str == '+') {str++; continue;}
if (*str == '-') {neg=true;str++;continue;}
if (*str == '.') {dot=true;str++;continue;}
numerator *= 10;
numerator += *str-'0';
if (dot) denominator*=10;
str++;
}
return neg ? -1*(numerator/denominator) : numerator/denominator;
}
int main() {
char str[101];
fgets(str, sizeof(str), stdin);
// Remove newline
uint8_t i = 0;
while (str[i]) {
if (str[i] == '\n') {
str[i] = '\0';
break;
}
i++;
}
float value = custom_atof(str);
printf("%.2f", value);
return 0;
}
Input
123.45
Expected Output
123.45