Compilare: user.c: In function ‘main’: user.c:45:13: warning: format ‘%s’ expects argument of type ‘char *’, but argument 3 has type ‘char (*)[1000001]’ [-Wformat=] fscanf(f,"%s",&sir); ^ user.c:32:25: warning: unused variable ‘j’ [-Wunused-variable] int m,n,i,parse,j,k; ^ user.c: In function ‘pop’: user.c:26:5: warning: control reaches end of non-void function [-Wreturn-type] } //sf pop_back ^ user.c: In function ‘main’: user.c:41:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.c:45:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%s",&sir); ^ user.c:50:16: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] {fscanf(f,"%c",&c); ^ user.c:51:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&c); ^ user.c:60:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&c); ^