Compilare: main.c: In function 'mergesort': main.c:16:5: warning: implicit declaration of function 'merge' [-Wimplicit-function-declaration] merge(left,mid,right); ^~~~~ main.c: At top level: main.c:20:6: warning: conflicting types for 'merge' void merge(int left, int mid, int right){ ^~~~~ main.c:16:5: note: previous implicit declaration of 'merge' was here merge(left,mid,right); ^~~~~ main.c: In function 'main': main.c:51:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&n); ^~~~~~~~~~~~~~~~~~~ main.c:53:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d",&v[i]); ^~~~~~~~~~~~~~~~~~~~~~