Interview Questions

Why doesnt this code work?

C Interview Questions and Answers


(Continued from previous question...)

Why doesnt this code work?

Q: Why doesn't this code:
double d;
scanf("%f", &d);
work?

A:Unlike printf, scanf uses %lf for values of type double, and %f for float.%f tells scanf to expect a pointer-to-float, not the pointer-to-double you gave it. Either use %lf, or declare the receiving variable as a float.

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