What are Switzerlands four major languages?

Answer 1

Wikipedia says :Switzerland lies at the crossroads of several major European cultures that have heavily influenced the country's languages and culture. Switzerland has four official languages: German (63.7% total population share, with foreign residents; 72.5% of residents with Swiss citizenship, in 2000) in the north, east and centre of the country; French (20.4%; 21.0%) to the west; Italian (6.5%; 4.3%) in the south.[121] Romansh (0.5%; 0.6%), a Romance language spoken locally in the southeastern trilingual canton of Graubünden, is designated by the Federal Constitution as a national language along with German, French and Italian (Article 4 of the Constitution), and as official language if the authorities communicate with persons of Romansh language (Article 70), but Federal Laws and other official acts do not need to be decreed in this language. The federal government is obliged to communicate in the official languages, and in the federal parliament simultaneous translation is provided from and into German, French and Italian.[122]

In short, German, French, Italian, and Romansh, in that order.

Answer 2

The four major languages spoken in Switzerland are German, French, Italian, and Romansh. German is the most widely spoken language, followed by French and Italian. Romansh is less common and primarily spoken in a few regions.