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Question

What is the output of this C code?
#include <stdio.h>
    int main()
    {
        int n;
        scanf("%d", &n);
        ungetc(n, stdin);
        scanf("%d", &n);
        printf("%d\n", n);
        return 0;
    }

a.

Compile time error

b.

Whatever is typed by the user first time

c.

Whatever is typed by the user second time

d.

Undefined behaviour

Posted under C Programming

Answer: (b).Whatever is typed by the user first time

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Q. What is the output of this C code?

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