Borderou de evaluare (job #558270)

Eroare de compilare: user.c:3:1: error: unknown type name ‘using’ user.c:3:17: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘std’ user.c: In function ‘main’: user.c:30:5: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:30:5: note: use option -std=c99 or -std=gnu99 to compile your code user.c:41:13: error: redefinition of ‘i’ user.c:30:13: note: previous definition of ‘i’ was here user.c:41:5: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:50:13: error: redefinition of ‘i’ user.c:41:13: note: previous definition of ‘i’ was here user.c:50:5: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:26:5: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] user.c:31:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]