Read float and double by scan()

• Use %e, %f, or %g for float. Use %le, %lf, or %lg for double.

#include <stdio.h>

main()

{

float x;

double y;

scanf("%f%lf", &x, &y);

printf("x=%f\ny=%f\n", x, y);

printf("x=%e\ny=%e\n", x, y);

printf("x=%g\ny=%g\n", x, y);

}

input is

47.403 -38.30026452e5

prints

x=47.304001

y=-3830026.452000

x=4.730400e+01

y=-3.830026e+06

x=47.304

y=-3.83003e+06

This is program pg81.c.

Previous slide

Next slide

Back to first slide

View graphic version