Compilare: main.cpp: In function 'int main()': main.cpp:26:19: warning: unused variable 'st' [-Wunused-variable] int n, m, a, b, st, dr, p, y, i, x, indice; ^~ main.cpp:26:39: warning: unused variable 'indice' [-Wunused-variable] int n, m, a, b, st, dr, p, y, i, x, indice; ^~~~~~ main.cpp:29:28: 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:31:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d",&a,&b); ^