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C Programming

C Programming
Determine output:void main(){ extern int i; i=20; printf("%d", sizeof(i));}

Compiler Error
2
20
Linker Error

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C Programming
int a[5] = {1,2,3}What is the value of a[4]?

3
1
2
Garbage Value
0

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C Programming
Determine Output:void main(){ int i=3; switch(i) { default: printf("zero"); case 1: printf("one"); break; case 2: printf("two"); break; case 3: printf("three"); break; }}

zero
None of These
three
Error

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C Programming
Determine Output:#define square(x) x*xvoid main(){ int i; i = 64/square(4); printf("%d", i);}

16
64
None of These
4

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C Programming
The statement int **a;

None of these.
is illegal
is syntactically and semantically correct
is legal but meaningless

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C Programming
What will be the output of the program ?#include#includevoid main(){ char str1[20] = "Hello", str2[20] = " World"; printf("%s", strcpy(str2, strcat(str1, str2)));}

Hello
Hello World
WorldHello
None of these
World

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