need help for Interrupts

Projects Programming
5

i try this but it break code.

How?

int keypress ;

Variables used in both interrupt service routines and in regular functions MUST be declared volatile.

  for(int row=0;row<4;row++) { 

    for(int col=0;col<8;col++) { 
      delay(100); 
      lc.setLed(0,col,row,true); 
      if(keypress==1){ 
        break;
        
      }
    } 
  }

You only want to break out of the inner loop?

Isyourspacekeybroken?