Compilare: main.c: In function 'readGraphEdgeList': main.c:48:5: warning: ignoring return value of 'fgets', declared with attribute warn_unused_result [-Wunused-result] fgets(buff, 200, f); ^~~~~~~~~~~~~~~~~~~ main.c:56:9: warning: ignoring return value of 'fgets', declared with attribute warn_unused_result [-Wunused-result] fgets(buff, 200, f); ^~~~~~~~~~~~~~~~~~~