what is the form of government in this country?
It is a federal republic composed of 26 cantons.
Switzerland
 It is a federal republic composed of 26 cantons, with federal authorities based in Bern.
what is the official name of switzerland answers The Swiss Confederation.
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Switzerland [SEP] Introduction
However, it participates in the Schengen Area and the European Single Market through bilateral treaties. Switzerland occupies the crossroads of Germanic and Romance Europe, as reflected in its four main linguistic and cultural regions: German, French, Italian and Romansh. Although the majority of the population are German-speaking, Swiss national identity is rooted in a common historical background, shared values such as federalism and direct democracy, and Alpine symbolism. Due to its linguistic diversity, Switzerland is known by a variety of native names: "Schweiz" (German); "Suisse" (French); "Svizzera" (Italian); and "Svizra" (Romansh). On coins and stamps, the Latin name, "Confoederatio Helvetica" – frequently shortened to "Helvetia" – is used instead of the four national languages.