diff --git a/ACA_Project.pdf b/ACA_Project.pdf
new file mode 100644
index 0000000..49ff32e
Binary files /dev/null and b/ACA_Project.pdf differ
diff --git a/Sine function b/Sine function
new file mode 100644
index 0000000..7bd20b5
--- /dev/null
+++ b/Sine function	
@@ -0,0 +1,27 @@
+fact 0 = 1
+fact n = n * fac (n-1)
+power x 0 = 1
+power x n = x*(pow x (n-1))
+sine error n x cursum = do
+    let an=(pow x (2*n-1))
+    let bn=(fac (2*n-1))
+    let cn=(pow (-1) (n+1))
+    let tn=cn*an/bn
+    if(error<abs tn)
+         then do
+              print tn
+              sine error (n+1) x (cursum+tn)
+    else print (cursum+tn)
+   
+ 
+    
+
+
+main = do
+    print "Enter value of x in radians"
+    str1<-getLine
+    print "Enter maximum error value"
+    str2<-getLine
+    let x=read str1::Double
+    let error=read str2::Double
+    sine error 1 x 0
diff --git a/Tic Tac toe NxN b/Tic Tac toe NxN
new file mode 100644
index 0000000..d92e0de
--- /dev/null
+++ b/Tic Tac toe NxN	
@@ -0,0 +1,111 @@
+import Data.List
+sum' row =foldl (\acc x -> acc+x) 0 (filter (/=8) row)
+
+diag1list state 0 n =[state!!0!!0]
+diag1list state i n = [state!!i!!i] ++ diag1list state (i-1) n
+diag2list state 0 n = [state!!0!!(n-1)]
+diag2list state i n = [state !!i!!(n-1-i)] ++ diag2list state (i-1) n
+
+windiag l n=do
+    let s=sum' l
+    if(s==2*n) then do 
+	print "X has won"
+	return ()
+        else do
+            if(s==3*n) then do 
+		print "0 has won"
+		return ()
+                else
+                    return ()
+
+checkwin state n i=do
+    if(i<n) then do
+        let l1=diag1list state (n-1) n
+        let l2=diag2list state (n-1) n
+        winrow state n i
+        wincol state n i
+        windiag l1 n
+        windiag l2 n
+        checkwin state n (i+1)
+        else return ()
+
+winrow state n i=do
+        let s= sum' (state!!i)
+        if(s==2*n) then do 
+	    print "X has Won"
+	    return ()
+            else do
+                if( s==3*n) then do
+		    print "0 has won"
+		    return ()
+                    else
+                       return()
+
+wincol state n i =do
+    let m = transpose state
+    let s=sum' (m!!i)
+    if(s==2*n) then do
+		print "X has won"
+		return ()
+        else do
+            if(s==3*n) then do
+		print "0 has won"
+		return ()
+                else
+                    return()
+
+
+
+
+game state i j c n= do
+    if(state!!i!!j==8) then do
+    
+        let row=state !! i
+        let p1=take j row
+        let p2= drop (j+1) row
+        let nrow=p1++[2+c `mod` 2]++p2
+        let py1=take i state
+        let py2=drop (i+1) state
+        let f=py1++[nrow]++py2
+        printgame f 0 0 n
+        checkwin f n 0
+        input f n (c+1)
+        else
+            input state n c
+        
+
+
+input state n c= do
+    str2<-getLine
+    let i=read str2::Int
+    str3<-getLine
+    let j=read str3::Int
+    game state i j (c `mod` 2) n
+
+                      
+printgame state i j n =do
+    if(i<n&&j<n-1)then do
+        if(state!!i!!j==8) then putStr("__ ")
+            else do
+                if(state!!i!!j==2) then putStr(" X ")
+                    else putStr(" 0 ")
+        printgame state i (j+1) n
+        else do
+            if(j==n-1&&i<n)then do
+                if(state!!i!!j==8) then putStr("__ ")
+                    else do
+                        if(state!!i!!j==2) then putStr(" X ")
+                            else putStr(" 0 ")
+                putStrLn("")
+                putStrLn("")
+                printgame state (i+1) 0 n
+                else
+                return ()   
+
+main = do
+    print "please enter dimension of the Grid"
+    str<-getLine
+    let n = read str::Int
+    let state = (replicate n) ((replicate n) 8)
+    printgame state 0 0 n
+    input state n 0
diff --git a/Tic-Tac-Toe(AI).hs b/Tic-Tac-Toe(AI).hs
new file mode 100644
index 0000000..c01645e
--- /dev/null
+++ b/Tic-Tac-Toe(AI).hs
@@ -0,0 +1,172 @@
+import Data.List
+printgame state i j n =do
+    if(i<n&&j<n-1)then do
+        if(state!!i!!j==8) then putStr("__ ")
+            else do
+                if(state!!i!!j==3000) then putStr(" X ")
+                    else putStr(" 0 ")
+        printgame state i (j+1) n
+        else do
+            if(j==n-1&&i<n)then do
+                if(state!!i!!j==8) then putStr("__ ")
+                    else do
+                        if(state!!i!!j==3000) then putStr(" X ")
+                            else putStr(" 0 ")
+                putStrLn("")
+                putStrLn("")
+                printgame state (i+1) 0 n
+                else
+                return ()   
+
+diag1list state 0 n =[state!!0!!0]
+diag1list state i n = [state!!i!!i] ++ diag1list state (i-1) n
+diag2list state 0 n = [state!!0!!(n-1)]
+diag2list state i n = [state !!i!!(n-1-i)] ++ diag2list state (i-1) n
+
+
+
+
+
+
+max2 :: Int -> Int -> IO Int
+max2 a b = do
+	if (a>b)then return a
+		else return b
+
+minimax :: [[Int]] -> Int -> Int -> Int -> Int -> IO Int
+minimax state i n bestscore besti= do -- moves are list of all valid moves
+        movesi <- getmovei state n 0 0 []
+        movesj <- getmovej state n 0 0 []
+        let num = length movesj
+        if (i<num) then do
+                let clone1 = change state (movesi!!i) (movesj!!i) 3000
+                score1 <- minplay clone1 0 n  (100000) (0) 0-- do a proper call 
+                let clone2 = change state (movesi!!i) (movesj!!i) 3001
+                score2 <- maxplay clone2 0 n  (-100000) (0) 0-- do a proper call 
+                score <- max2 score1 score2
+                if(score>bestscore) then do
+                    minimax state (i+1) n score i
+                    else minimax state (i+1) n bestscore besti
+            else do  
+                return besti
+
+
+minplay ::[[Int]] -> Int -> Int -> Int ->Int -> Int -> IO Int
+minplay state i n bestscore besti depth= do -- moves are list of all valid moves
+        movesi <- getmovei state n 0 0 []
+        movesj <- getmovej state n 0 0 []
+        let num = length movesj
+        if(i==num || depth >8) then do
+            res <- evaluate state n
+            return res
+            else do
+                if (i<num) then do
+                    let clone = change state (movesi!!i) (movesj!!i) (3001)
+                    score <- maxplay clone 0 n (-100000) (0) (1+depth) -- do a proper call 
+                    if(score<bestscore) then do
+                        minplay state (i+1) n score besti depth
+                        else minplay state  (i+1) n bestscore i depth
+                else return bestscore
+
+
+maxplay ::[[Int]] -> Int -> Int -> Int  ->Int -> Int -> IO Int
+maxplay state i n bestscore besti depth= do -- moves are list of all valid moves
+        movesi <- getmovei state n 0 0 []
+        movesj <- getmovej state n 0 0 []
+        let num = length movesj
+        if(i==num || depth > 8) then do
+            res <- evaluate state n
+            return res
+            else do
+                if (i<num) then do
+                    let clone = change state (movesi!!i) (movesj!!i) (3000)
+                    score <- minplay clone 0 n 100000 (0) (1+depth)-- do a proper call 
+                    if(score>bestscore) then do
+                        maxplay state (i+1) n score besti depth
+                        else maxplay state (i+1) n bestscore i depth
+                else return bestscore
+change::[[Int]]->Int->Int->Int->[[Int]]
+change state i j val=(take i state)++[(take j (state!!i))++[val]++(drop (j+1) (state!!i))]++(drop (i+1) state)
+
+getmovei :: [[Int]] -> Int -> Int -> Int -> [Int] -> IO [Int]
+getmovei state n i j list=do
+    if(i==n)then return list
+        else do
+            if(j==n-1) then do
+                if(state!!i!!j==8) then getmovei state n (i+1) 0 (list ++ [i])
+                    else getmovei state n (i+1) 0 (list)
+                else do
+                    if(state!!i!!j==8) then getmovei state n (i) (j+1) (list ++ [i])
+                        else getmovei state n (i) (j+1) (list)
+
+getmovej :: [[Int]] -> Int -> Int -> Int -> [Int] -> IO [Int]
+getmovej state n i j list=do
+    if(i==n)then return list
+        else do
+            if(j==n-1) then do
+                if(state!!i!!j==8) then getmovej state n (i+1) 0 (list ++ [j])
+                    else getmovej state n (i+1) 0 (list)
+                else do
+                    if(state!!i!!j==8) then getmovej state n (i) (j+1) (list ++ [j])
+                        else getmovej state n (i) (j+1) (list)
+
+
+            
+
+
+dlist1 board 0 n=[board!!0!!0]
+dlist1 board i n=[board!!i!!i]++dlist1 board (i-1) n
+dlist2 board 0 n=[board!!0!!(n-1)]
+dlist2 board i n=[board!!i!!(n-i-1)]++dlist2 board (i-1) n
+-------------------------------------------------------------------------------
+ones row=length (filter (==3000) row)
+negs row=length (filter (==(3001)) row)
+scr o n=(20^o)-(20^n)
+
+scor::[[Int]]->Int->Int->Int->IO Int
+scor a i s dim=do
+    if(i<dim) then do
+        let b=s+scr (ones (a!!i)) (negs (a!!i))
+        scor a (i+1) b dim
+            else return s
+evaluate::[[Int]]->Int->IO Int
+evaluate a dim= do
+    t1<-scor a 0 0 dim
+    t2<-scor (transpose a) 0 0 dim
+    let o=ones (dlist1 a (dim-1) (dim))
+    let n=negs (dlist1 a (dim-1) (dim))
+    let t3=scr o n
+    let o=ones (dlist2 a (dim-1) (dim))
+    let n=negs (dlist2 a (dim-1) (dim))
+    let t4=scr o n
+    let m=(t1+t2+t3+t4)
+    return m
+
+input state n= do
+    str2 <- getLine
+    let i=read str2::Int
+    str3 <- getLine
+    let j=read str3::Int
+    let clone = change state i j 3000
+    b <- minimax clone 0 n 0 0
+    movesi <- getmovei clone n 0 0 []
+    movesj <- getmovej clone n 0 0 []
+    let num = length movesj
+    if(num==0) then do
+    	printgame clone 0 0 n
+    	print "GAME"
+    	else do
+    		print "Com 's turn"
+    		let clone2 = change clone (movesi!!b) (movesj!!b) 3001
+    		printgame clone2 0 0 n
+    		input clone2 n
+
+
+main = do
+    print "please enter dimension of the Grid"
+    str<-getLine
+    let n = read str::Int
+    let state = (replicate n) ((replicate n) 8)
+    printgame state 0 0 n
+    input state n 
+    print "OVER"
diff --git a/TicTacToe.hs b/TicTacToe.hs
new file mode 100644
index 0000000..8b352a6
--- /dev/null
+++ b/TicTacToe.hs
@@ -0,0 +1,57 @@
+sm a x y c=do
+    let check1 =0
+    let check2 =0
+    let check3 =0
+    let check4 =0
+    let check5 =0
+    let check6 =0
+    let check7 =0
+    let check8 =0
+    if (a!!x!!y/=2)
+    	then do
+    		 print "INVALID COORDINATES!! enter unfilled coordinates"
+    		 y<-getLine
+    		 x<-getLine
+    		 sm a (read x::Int) (read y::Int) c
+    else return()
+
+    let row=a!!y
+    let p1=take x row
+    let p2= drop (x+1) row
+    let nrow=p1++[c `mod` 2]++p2
+    let py1=take y a
+    let py2=drop (y+1) a
+    let f=py1++[nrow]++py2
+    print (f!!0)
+    print (f!!1)
+    print (f!!2)
+    let b = c+1
+    check1 <- if (f!!0!!0==f!!0!!1)&&(f!!0!!1==f!!0!!2)&&(f!!0!!2/=2) then return (1) else return (0)
+    check2 <- if (f!!1!!0==f!!1!!1)&&(f!!1!!1==f!!1!!2)&&(f!!1!!2/=2) then return (1) else return (0)
+    check3 <- if (f!!2!!0==f!!2!!1)&&(f!!2!!1==f!!2!!2)&&(f!!2!!2/=2) then return (1) else return (0)
+    check4 <- if (f!!0!!0==f!!1!!0)&&(f!!2!!0==f!!1!!0)&&(f!!1!!0/=2) then return (1) else return (0)
+    check5 <- if (f!!0!!1==f!!1!!1)&&(f!!1!!1==f!!2!!1)&&(f!!2!!1/=2) then return (1) else return (0)
+    check6 <- if (f!!0!!2==f!!1!!2)&&(f!!2!!2==f!!1!!2)&&(f!!1!!2/=2) then return (1) else return (0)
+    check7 <- if (f!!0!!0==f!!1!!1)&&(f!!1!!1==f!!2!!2)&&(f!!2!!2/=2) then return (1) else return (0)
+    check8 <- if (f!!0!!2==f!!1!!1)&&(f!!1!!1==f!!2!!0)&&(f!!2!!0/=2) then return (1) else return (0)
+    let check = check1+check2+check3+check4+check5+check6+check7+check8
+    if (check/=0)
+    	then do
+             print "Game Over"
+             print (c `mod` 2) 
+             print "Wins"
+    else return()
+    print "Please enter x and y coordinates for next turn "
+    y<-getLine
+    x<-getLine
+    if (check==0) then sm f (read x::Int) (read y::Int) b else print ("GAME OVER ")
+    
+main=do
+    let f=[[2,2,2],[2,2,2],[2,2,2]]
+    print (f!!0)
+    print (f!!1)
+    print (f!!2)
+    print "Please enter x and y coordinates for first turn "
+    x<-getLine
+    y<-getLine
+sm f (read x::Int) (read y::Int) 0
diff --git a/tic.c b/tic.c
new file mode 100644
index 0000000..f05323a
--- /dev/null
+++ b/tic.c
@@ -0,0 +1,61 @@
+#include<stdio.h>
+char mat[3][3]={' ',' ',' ',
+' ',' ',' ',
+' ',' ',' '},i,arr[9]={0,0,0,0,0,0,0,0,0};	//arr is 0 where input is to be taken
+
+void printmat(){
+	int i,j;
+	printf("\n");
+	for(i=0;i<3;i++){
+	for(j=0;j<3;j++)
+		printf("%c ",mat[i][j]);
+		printf("\n");
+		}
+}
+
+void printopt(){
+	printf("\n");
+	int i,j,p,c=1,t;
+	for(i=0;i<3;i++)
+	for(j=0;j<3;j++){
+		//printf("%d",mat[i][j]);
+		if(mat[i][j]!=' '){
+			t=3*i+j;
+			arr[t]=1;
+		}
+	}
+
+	for(p=0;p<9;p++){
+		if(arr[p]==0){
+		printf("%d.(%d,%d)\n",c,(p)/3+1,(p)%3+1);
+		c++;
+		}
+	}
+}
+
+int matammend(int ind,int in){
+	int i;
+	for(i=0;i<9;i++){
+		if(arr[i]==0){
+			in--;
+			if(in==0){
+				if(ind%2==0)mat[i/3][i%3]='X';
+				else mat[i/3][i%3]='O';
+			}
+		}
+	}
+}
+int main(){
+int in;
+for(i=0;i<9;i++){
+
+printopt();
+scanf("%d",&in);
+matammend(i,in);
+printmat();
+
+
+}
+	
+}
+