通过 scanf() 获取输入后将垃圾值作为输出的双精度数据类型

main()
{   
    double B_Sal, DR_Al,H_RA, Total_Sal;
    printf("Enter Your Basic Salary ");
    scanf("%f",&B_Sal);
    printf("the amount entered is %f \n",B_Sal);
    DR_Al=0.4*B_Sal;
    H_RA=0.2* B_Sal;
    Total_Sal=B_Sal+ DR_Al+ H_RA;
    printf("The Total Salary Is %f",Total_Sal);
    
}

无论给出什么输入，它都会给出输出负垃圾值。当数据类型更改为时，相同的代码float工作正常。

要获得双精度输入，说明符为 %lf，

    #include <stdio.h>
#include<string.h>
int main()
{
    double B_Sal, DR_Al,H_RA, Total_Sal;
    printf("Enter Your Basic Salary ");
    scanf("%lf",&B_Sal);
    printf("the amount entered is %f \n",B_Sal);
    DR_Al=0.4*B_Sal;
    H_RA=0.2* B_Sal;
    Total_Sal=B_Sal+ DR_Al+ H_RA;
    printf("The Total Salary Is %f",Total_Sal);
}

Output: