C - Data Types - Discussion

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Q.

What will be output when you will execute following c code?

#include
void main(){
char *ptr="cquestionbank";
printf("%d",-3[ptr]);
}
A. Garbage value B. -300
C. -103 D. Compilation error

Answer: Option C
Explaination:

-3[ptr]

=-*(3+ptr)
=-*(ptr+3)
=-ptr[3]
=-103 //ASCII value of character 'e' is 103


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