Compilare: user.c: In function ‘citire’: user.c:6:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&a); ^ user.c:7:15: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&b); ^ user.c:8:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘adunare’: user.c:17:1: warning: control reaches end of non-void function [-Wreturn-type] } ^