Eroare de compilare: user.c: In function ‘main’: user.c:17:5: error: unknown type name ‘FILE’ FILE *f, *g; ^ user.c:18:5: warning: implicit declaration of function ‘fopen’ [-Wimplicit-function-declaration] f = fopen ("trompeta.in", "r"); ^ user.c:18:7: warning: assignment makes pointer from integer without a cast [enabled by default] f = fopen ("trompeta.in", "r"); ^ user.c:19:7: warning: assignment makes pointer from integer without a cast [enabled by default] g = fopen ("trompeta.out", "w"); ^ user.c:20:5: warning: implicit declaration of function ‘fscanf’ [-Wimplicit-function-declaration] fscanf (f, "%d %d", &n, &m); ^ user.c:20:5: warning: incompatible implicit declaration of built-in function ‘fscanf’ [enabled by default] user.c:45:5: warning: implicit declaration of function ‘fputs’ [-Wimplicit-function-declaration] fputs(v, g); ^ user.c:47:5: warning: implicit declaration of function ‘fclose’ [-Wimplicit-function-declaration] fclose(f); ^