/in/hw7.c: In function 'sortscores':
/in/hw7.c:159:20: error: iteration 255 invokes undefined behavior [-Werror=aggressive-loop-optimizations]
             str3[x]='\0';
             ~~~~~~~^~~~~
/in/hw7.c:156:9: note: within this loop
         for(int x=0;x<=255;x++)
         ^~~
/in/hw7.c:53:20: error: iteration 255 invokes undefined behavior [-Werror=aggressive-loop-optimizations]
             str3[x]='\0';
             ~~~~~~~^~~~~
/in/hw7.c:51:9: note: within this loop
         for(int x=0;x<=255;x++)
         ^~~
cc1: all warnings being treated as errors