Eroare de compilare: user.c: In function ‘readInput’: user.c:21: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result user.c: In function ‘constructPrimeNumbers’: user.c:31: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:31: note: use option -std=c99 or -std=gnu99 to compile your code user.c:50: error: redefinition of ‘index’ user.c:31: note: previous definition of ‘index’ was here user.c:50: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c: In function ‘printSolution’: user.c:63: warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long long int’ user.c: In function ‘FindAllCommonMultiples’: user.c:74: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c: In function ‘calculateMultiples’: user.c:103: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c: In function ‘calculateReductibleFractionsCount’: user.c:121: warning: array subscript has type ‘char’ user.c: In function ‘constructSolution’: user.c:146: error: ‘for’ loop initial declarations are only allowed in C99 mode