printf_scientific_notation.cpp

#include <stdio.h>
#include <math.h>

int main(){
    printf("%.10e\n", sqrt(3.14));
    printf("%f\n", sqrt(3.14));
    printf("%lf\n", sqrt(3.14));
    return 0;
}

/*
1.7720045147e+00
1.772005
1.772005
*/