Compilare: main.cpp: In function 'int main()': main.cpp:41:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(ma[a][b]==1) ^~ main.cpp:43:21: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' con=1; ^~~ main.cpp:9:24: warning: unused variable 'nr' [-Wunused-variable] int p,n,m,i,j,a,b,rest,nr,nrace=0,i1,j1,con,x,y,r1,r2,r3,r4,cmmmc; ^~ main.cpp:15:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d%d",&p,&n,&m); ^ main.cpp:30:36: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&mnr[i][j]); ^