Compilare: user.c: In function ‘calc’: user.c:9:5: warning: type of ‘i’ defaults to ‘int’ [-Wimplicit-int] int calc(i,j,cer) ^ user.c:9:5: warning: type of ‘j’ defaults to ‘int’ [-Wimplicit-int] user.c:9:5: warning: type of ‘cer’ defaults to ‘int’ [-Wimplicit-int] user.c: In function ‘main’: user.c:44:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d",&n,&m); ^ user.c:48:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d",&v[i][j]); ^