Eroare de compilare: user.c:1:22: error: iostream.h: No such file or directory user.c:2:21: error: fstream.h: No such file or directory user.c: In function ‘main’: user.c:9: error: ‘FILE’ undeclared (first use in this function) user.c:9: error: (Each undeclared identifier is reported only once user.c:9: error: for each function it appears in.) user.c:9: error: ‘f’ undeclared (first use in this function) user.c:9: error: ‘g’ undeclared (first use in this function) user.c:9: warning: left-hand operand of comma expression has no effect user.c:10: warning: implicit declaration of function ‘fopen’ user.c:15: warning: implicit declaration of function ‘fscanf’ user.c:15: warning: incompatible implicit declaration of built-in function ‘fscanf’ user.c:31: warning: implicit declaration of function ‘fprintf’ user.c:31: warning: incompatible implicit declaration of built-in function ‘fprintf’ user.c:41: warning: implicit declaration of function ‘abs’ user.c:58: warning: incompatible implicit declaration of built-in function ‘fprintf’ user.c:61: warning: implicit declaration of function ‘fclose’