Compilare: main.cpp: In function 'char adv()': main.cpp:29:37: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buf,sizeof(char),SIZE,fin); ^ main.cpp: In function 'int main()': main.cpp:56:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d ",&c,&n); ^ main.cpp:62:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&a); ^