An executable program asks the user for their name and a number, which the program multiplies by two. When prompted by a long name, the arithmetic operation looks wrong but it does not cause a segmentation fault. Please help me explain why the input I gave causes the numbers to be wrong. Thank you!

./prc Give me a number and I will multiply it by 2: 8 What's your name? happybirthdayhappybirthdayhappybirthday Dear happybirthdayhappybirthdayhappybirthday, 1150335312520829468672.000000 x 2 = 2300670625041658937344.000000