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#include <stdio.h>
 
int main() {
	int a, b, i=0, j;
	for (i<4;i==0;i++);
	{if (i<4);
	printf ("oi")
	else 
	printf ("tchau")
 
 
	return 0;
}}
 

prog.c: In function ‘main’:
prog.c:5:8: warning: statement with no effect [-Wunused-value]
  for (i<4;i==0;i++);
       ~^~
prog.c:5:2: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation]
  for (i<4;i==0;i++);
  ^~~
prog.c:6:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’
  {if (i<4);
  ^
prog.c:8:2: error: expected ‘;’ before ‘else’
  else
  ^~~~
prog.c:4:17: warning: unused variable ‘j’ [-Wunused-variable]
  int a, b, i=0, j;
                 ^
prog.c:4:9: warning: unused variable ‘b’ [-Wunused-variable]
  int a, b, i=0, j;
         ^
prog.c:4:6: warning: unused variable ‘a’ [-Wunused-variable]
  int a, b, i=0, j;
      ^

Standard output is empty