c++ string format code example

Example 1: sprintf

char myConcatenation[80];
    char myCharArray[16]="A variable name";
    int myInt=5;
    sprintf(myConcatenation,"%s = %i",myCharArray,myInt);
    Serial.println(myConcatenation);

Example 2: format string cpp

#include <iostream>
#include <format>
 
int main() {
    std::cout << std::format("Hello {}!\n", "world");
}

Example 3: c++ formatting

cout << setw(10) << "ten" << "four" << "four" << '\n';
// Display ten       fourfour

cout << setfill('-') << setw(80) << "-" << '\n';
// Displays 80 "-"