Why is my custom shader code saying : Unexpected token 'uv'? - unity3d

Question

I watched b3agz's making minecraft in unity tutorial on episode 15 there was an error when i coded the shade saying unexpected token 'uv' please help.
Here is my code for it:
Shader "Minecraft/Blocks"
{
Properties
{
_MainTex("Block Texture Atlas", 2D) = "white" {}
}
SubShader
{
Tags{"Queue"="AlphaTest" "IgnoreProjector"="True" "RenderType"="TransparentCutout"}
LOD 100
Lighting Off
Pass
{
CGPROGRAM
#pragma vertex vertFunction
#pragma fragment fragFunction
#pragma target 2.0
#include "UnityCG.cginc"
struct appdata
{
float4 vertex : POSITION:
float2 uv : TEXCOORD0;
float4 color : COLOR;
};
struct v2f
{
float4 vertex : SV_POSITION:
float2 uv : TEXCOORD0;
float4 color : COLOR;
};
sampler2D _MainTex;
float GlobalLightLevel;
v2f vertFunction(appdata v)
{
v2f o;
o.vertex = UnityObjectToClipPos(v.vertex);
o.uv = v.uv;
o.color = v.color;
return o;
}
fixed4 fragFunction(v2f i) : SV_Target
{
fixed4 col = tex2D(_MainTex, i.uv);
float localLightLevel = clamp(GlobalLightLevel + i.color.a,0,1);
clip(col.a - 1);
col = lerp(col, float4(0,0,0,1), localLightLevel);
return col;
}
ENDCG
}
}
}

Answer 1

Both of your struct definitions, appdata and v2f have a colon in place of a semi-colon for the float4 vertex.
The correct syntax would be:
struct appdata
{
float4 vertex : POSITION;
float2 uv : TEXCOORD0;
float4 color : COLOR;
};
struct v2f
{
float4 vertex : SV_POSITION;
float2 uv : TEXCOORD0;
float4 color : COLOR;
};