Input of the C language double type

Double input with%LF, but not with%f

Today when using the double type input scanf("%lf", &a) , the result is 0 when the output is%f, the%g,%e output appears to be the smallest double value

12.34567890.0000000.000006.952986e-3106.95299e-310

The correct code is as follows

#include <stdio.h>int main(){    double a;    scanf("%lf", &a);//换成 %f 会无法正确输入    printf("%f\n", a);    printf("%.5f\n", a);    printf("%e\n", a);    printf("%g", a);}

Input of the C language double type