Compilare: main.cpp: In function 'int main()': main.cpp:60:58: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d%d%d%d%d%d",&p,&n,&m,&T,&L,&C,&k,&S); ^ main.cpp:64:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&a,&b); ^ main.cpp:71:39: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&mat[i][j]); ^