diff --git a/C/type_of_triangle.c b/C/type_of_triangle.c
new file mode 100644
index 0000000..1617c7f
--- /dev/null
+++ b/C/type_of_triangle.c
@@ -0,0 +1,40 @@
+//check type of triangle(equilateral, isosceles, right angled, scalene)
+
+#include<stdio.h>
+#include<math.h>
+int main()
+{
+    int a, b, c, l, sum;
+    printf("Enter a: ");
+    scanf("%d", &a);
+    printf("Enter b: ");
+    scanf("%d", &b);
+    printf("Enter c: ");
+    scanf("%d", &c);
+
+    if(((a<0) || (b<0) || (c<0)) || ((a==0) || (b==0) || (c==0))){
+        printf("ERROR!!! Enter +ve and >0 values only \n");
+    }
+    else{
+    if((a==b) && (b==c))
+    printf("Equilateral \n");
+    else if((a==b) || (a==c) || (b==c))
+    {
+        printf("Isosceles \n");
+    }
+    else if(((a*a)+(b*b)==(c*c)) || ((a*a)+(c*c)==(b*b)) || ((b*b)+(c*c)==(a*a)))
+    {
+        printf("Right angled \n");
+
+    }
+    else if(((a*a)+(b*b)<(c*c)) || ((a*a)+(c*c)>(b*b)) || ((b*b)+(c*c)<(a*a)))
+    {
+        printf("Obtuse \n");
+    }
+    else if((a==b) && (b==c))
+    printf("Equilateral \n");
+
+    else
+    printf("Scalene");
+    }
+}
\ No newline at end of file