diff --git a/analyzers/c_analyzer/c_analyzer.l b/analyzers/c_analyzer/c_analyzer.l
index 2f728a0..6a1d580 100644
--- a/analyzers/c_analyzer/c_analyzer.l
+++ b/analyzers/c_analyzer/c_analyzer.l
@@ -30,6 +30,7 @@ void yyerror(const char *s) {
 "!"      { return NOT; }
 "<"      { return LT; }
 ">"      { return GT; }
+"=="     { return EQ; }
 
 "return" { return RET; }
 "print"  { return PRINT; }
diff --git a/analyzers/c_analyzer/c_analyzer.y b/analyzers/c_analyzer/c_analyzer.y
index 14a0c05..b0b4cce 100644
--- a/analyzers/c_analyzer/c_analyzer.y
+++ b/analyzers/c_analyzer/c_analyzer.y
@@ -16,7 +16,7 @@ bool debug = false; // debug mode
 }
 
 %token <str> IDENTIFIER NUMBER
-%token LBRACE RBRACE LPAREN RPAREN SEMICOLON ASSIGN PLUS MINUS MULT DIV MOD RET PRINT WHILE DO IF ELSE AND OR NOT LT GT
+%token LBRACE RBRACE LPAREN RPAREN SEMICOLON ASSIGN PLUS MINUS MULT DIV MOD RET PRINT WHILE DO IF ELSE AND OR NOT LT GT EQ
 %token FUNC COMMA
 
 %type <str> expr program statement block func_decl param_list params
@@ -107,6 +107,7 @@ expr:
     | expr AND { if (debug) printf("AND\n") } expr
     | expr LT { if (debug) printf("LT\n") } expr
     | expr GT { if (debug) printf("GT\n") } expr
+    | expr EQ { if (debug) printf("EQ\n") } expr
     | NOT { if (debug) printf("NOT\n") } expr              
     | IDENTIFIER { if (debug) printf("IDENTIFIER(%s)\n", $1); free($1); }
     | NUMBER { if (debug) printf("NUMBER(%s)\n", $1); free($1); }
diff --git a/code.txt b/code.txt
index 3c276fe..58dd113 100644
--- a/code.txt
+++ b/code.txt
@@ -20,7 +20,7 @@ func main()
 
     if (!x && 1 || (x + (-100))) { // comment
         x = 3;
-        if (x) {
+        if (x == 3) {
             x = 5;
         }
     } else {