Logic and judge who is the thief _ thief problem

Source: Internet
Author: User

The police arrested A,b,c,d four suspects, only one is a thief, the results of the interrogation are as follows:
A said: "I am not a thief." ”
B said: "C is a thief." ”
C said: "The thief must be D." ”
D said: "C in wronged people." ”
It is now known that 4 out of 3 people are telling the truth, one is telling lies, then who is the thief.

#include <stdio.h>
int main ()
{int x;
for (x=1;x<=4;x++)
    if ((x!=1) + (x==3) + (x==4) + (x!=4) ==3)
        printf ("%c is a Thief.", (64+x+ '));//char (x+64) return

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