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What will be the output of the program? #include<stdio.h> int main() { unsigned int i = 65535; / Assume 2 byte integer/ while(i++ != 0) printf("%d",++i); printf("\n"); return 0; } ?->(Show Answer!)
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1. What will be the output of the program? #include<stdio.h> int main() { unsigned int i = 65535; / Assume 2 byte integer/ while(i++ != 0) printf("%d",++i); printf("\n"); return 0; }





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  • By: guest on 01 Jun 2017 06.01 pm
    Here unsigned int size is 2 bytes. It varies from 0,1,2,3, ... to 65535. Step 1:unsigned int i = 65535; Step 2:
    Loop 1: while(i++ != 0) this statement becomes while(65535 != 0). Hence the while(TRUE) condition is satisfied. Then the printf("%d", ++i); prints '1'(variable 'i' is already incremented by '1' in while statement and now incremented by '1' in printf statement) Loop 2: while(i++ != 0) this statement becomes while(1 != 0). Hence the while(TRUE) condition is satisfied. Then the printf("%d", ++i); prints '3'(variable 'i' is already incremented by '1' in while statement and now incremented by '1' in printf statement)
    ....
    ....
    The while loop will never stops executing, because variable i will never become '0'(zero). Hence it is an 'Infinite loop'.
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