通过 scanf() 获取输入后，Double 数据类型将垃圾值设为 output

Question

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);
    
}

Whatever input is given it just gives output as negative garbage value . This same code when data type is change to float works fine.

Answer 1

To get double as input the specifier is %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: