e, E: Floating point displayed in exponential form. : printf exponential form « printf scanf « C Tutorial

1. C Tutorial
2. printf scanf
3. printf exponential form

#include <stdio.h>
main()
{
    float f = 10.9999;
    printf(" %e \n",f);
    printf(" %E \n",f);

}

1.099990e+01
      1.099990E+01