Compilare: user.c: In function ‘main’: user.c:25:5: warning: format ‘%ld’ expects argument of type ‘long int *’, but argument 3 has type ‘int *’ [-Wformat=] for(i=0;i<t;i++) {x=1;c=1;fscanf(f,"%ld",&n);fscanf(f,"%ld",&k); ^ user.c:25:5: warning: format ‘%ld’ expects argument of type ‘long int *’, but argument 3 has type ‘int *’ [-Wformat=] user.c:21:14: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] long t,x,c; ^ user.c:24:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&t); ^ user.c:25:37: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for(i=0;i<t;i++) {x=1;c=1;fscanf(f,"%ld",&n);fscanf(f,"%ld",&k); ^ user.c:25:56: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] for(i=0;i<t;i++) {x=1;c=1;fscanf(f,"%ld",&n);fscanf(f,"%ld",&k); ^