Interview Questions for "matchstick" programmers-breaking inertial thinking

Note this question because you are more aware of the necessity and importance of breaking the "inertial thinking" to solve the problem. We should consider it from another angle when solving problems in the future.

From coolshell

The following is a C program that wants to output 20 minus signs. However, the careless programmer writes the code wrong and you need to modify the following code correctly. However,You can only add or modify one character.Three answers are provided.

12345

int n = 20; for(int i = 0; i < n; i--){    printf("-");}

The following is the correct answer --

12345678

// Solution 1: Add a negative sign to I in the For Loopfor(int i = 0; -i < n; i--) // Solution 2: Convert I -- into n -- In the For Loop --for(int i = 0; i < n; n--) // Solution 3: Convert <in the for loop to +for(int i = 0; i + n; i--)