Eroare de compilare: user.c: In function ‘main’: user.c:23: warning: format ‘%Ld’ expects type ‘long long int *’, but argument 3 has type ‘long int *’ user.c:24: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:24: note: use option -std=c99 or -std=gnu99 to compile your code user.c:26: warning: format ‘%Ld’ expects type ‘long long int *’, but argument 3 has type ‘long int *’ user.c:26: warning: format ‘%Ld’ expects type ‘long long int *’, but argument 4 has type ‘long int *’ user.c:27: warning: format ‘%Ld’ expects type ‘long long int’, but argument 3 has type ‘long int’ user.c:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c:26: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result