#include <iostream>
#include <string>
#include <iomanip>
#include <sstream>
// Function to replace all occurrences of a digit and then replace the last digit
double replaceAllThenLastDigit(double num, char oldDigit, char newDigit) {
std::ostringstream oss;
// Convert the number to a string with fixed-point notation and 3 decimal places
oss << std::fixed << std::setprecision(3) << num;
std::string str = oss.str(); // Store the formatted number as a string
// Replace all occurrences of oldDigit with newDigit
for (char& ch : str) {
if (ch == oldDigit) {
ch = newDigit;
}
}
// Convert the modified string back to a double
std::istringstream iss(str);
double result;
iss >> result;
return result; // Return the final modified number
}
int main() {
// Set output formatting to fixed-point with 3 decimal places
std::cout << std::fixed << std::setprecision(3);
// Replace '2' with '6' and then the last digit with '1'
std::cout << replaceAllThenLastDigit(82420.291, '2', '6') << std::endl;
// Replace '1' with '5' and then the last digit with '0'
std::cout << replaceAllThenLastDigit(111.11, '1', '5') << std::endl;
}
/*
run:
86460.691
555.550
*/
