Compilare: user.cpp: In function ‘unsigned int next(unsigned int, unsigned int, char)’: user.cpp:24:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++) ^ user.cpp: In function ‘int rez(unsigned int)’: user.cpp:35:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<m;i++){//daca pun intrebarea pe poz i ^ user.cpp: In function ‘int main()’: user.cpp:49:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<n;i++){ ^ user.cpp:51:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m;j++) ^ user.cpp:54:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<m;j++) ^ user.cpp:48:29: 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:50:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%c",&ch); ^ user.cpp:52:40: 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:55:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&cost[j]); ^