Eroare de compilare: user.c:1:21: error: iostream.h: No such file or directory user.c:2:20: error: fstream.h: No such file or directory user.c: In function ‘produs’: user.c:8: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:8: note: use option -std=c99 or -std=gnu99 to compile your code user.c: At top level: user.c:12: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘permutare_identica’ user.c: In function ‘main’: user.c:20: error: ‘ifstream’ undeclared (first use in this function) user.c:20: error: (Each undeclared identifier is reported only once user.c:20: error: for each function it appears in.) user.c:20: error: expected ‘;’ before ‘fin’ user.c:21: error: ‘fin’ undeclared (first use in this function) user.c:22: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:25: warning: implicit declaration of function ‘permutare_identica’ user.c:26: error: ‘ofstream’ undeclared (first use in this function) user.c:26: error: expected ‘;’ before ‘fout’ user.c:27: error: ‘fout’ undeclared (first use in this function)