C programming 04 - Examples Quiz and Problems (Basic Level)

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[HimanshuSharma-lcto]

Q21) Correct Option is ==> d) 0
as c does not support boolean. The expression must evaluate to 0

[hannahelezabath]

If only the indentation for the programs are correct it will be easy to solve

[raziasulthana]

i want use the all logical opertors using one program plz explain

[mayurdeshmukhofficial]

plz tell explain me:
Q22)
if(a>b) pf()
else
pf()
pf()

[nitinsen]

#include <stdio.h>
#define SYSTEM 20
int main()
{
int a = 20;

#if SYSTEM == a
printf("HELLO ");
#endif
#if SYSTEM == 20
printf("WORLD\n");
#endif
}


please explain it