placi.c: In function 'main': placi.c:7: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:7: note: use option -std=c99 or -std=gnu99 to compile your code placi.c:11: error: redefinition of 'i' placi.c:7: note: previous definition of 'i' was here placi.c:11: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:15: error: redefinition of 'i' placi.c:11: note: previous definition of 'i' was here placi.c:15: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:17: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:34: error: redefinition of 'i' placi.c:15: note: previous definition of 'i' was here placi.c:34: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:36: error: 'for' loop initial declarations are only allowed in C99 mode placi.c:63: warning: suggest parentheses around '&&' within '||' placi.c:63: warning: suggest parentheses around '&&' within '||' placi.c:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result placi.c:8: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result