Compilare: user.cpp: In function ‘int main()’: user.cpp:47:13: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] int i,j,k,s,rasp=0; ^ user.cpp:49:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&m); ^ user.cpp:51:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&ch); ^ user.cpp:53:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&bit[i][j]); ^ user.cpp:57:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&cost[j]); ^ user.cpp:59:20: warning: ‘s’ may be used uninitialized in this function [-Wmaybe-uninitialized] rasp=calcul(0,s); ^