Compilare: main.cpp: In function 'int main()': main.cpp:24:52: warning: unused variable 'val' [-Wunused-variable] int n , m , i , ctot , sol=0 , ev = 0 , a , b, val , poz , tren , put; ^~~ main.cpp:25:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&n,&m); ^ main.cpp:27:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&statie[i],&cap[i]); ^ main.cpp:34:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d",&a,&b); ^