c - 此代码中的第二个 scanf 将不会读取。 (C 代码)

Question

我刚回到 C，在我做了所有搜索之后，我没有为这段代码想出一个可行的解决方案:

double a = 0, c = 0;
printf("Please enter 2 numbers! Number 1: \n");
scanf(" %d", &a); 

printf("Please enter number 2 now!\n");     
scanf(" %d", &c);  /*This scanf is problematic*/
printf("Thank you! The numbers you have entered are %i and %i", a, c);

第二个 scanf(带或不带空格)不读取任何数字，而是给出它初始化时使用的 0。第一个 scanf 工作正常。我希望我只是忽略了一些东西，但我已经尝试了几个错误。

Answer 1

你只需要将 %i 和 %d 更改为 %lf ，如下所示:

double a=0, c=0;

printf("Please enter 2 numbers! Number 1: \n");

scanf(" %lf", &a);

printf("Please enter number 2 now!\n");

scanf(" %lf", &c);

printf("Thank you! The numbers you have entered are %lf and %lf", a, c);