Now I need help adding arrays

So lets say that I want to add arrays, How would I go about doing this. So the array would have a size limit of 7 so it would be something like.. int array[7] or would be it size = 7; array[size]? Then how would I go about adding these integers? Would I store another variable in the array's? Like so if I wanted a total of seven array sizes, like array[1][2][3][4][5][6][7]; would i have like 7 different variables , like a,b,c,d,e,f,g,h? or something like that and assign each variable to the array? I'm just very confused.... need help, lots of help. Need the C programming pro's to help me. I feel so lost... so lonely..