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Ben Os
20,008 PointsSmall for loop quesiton
This is the for loop, we can see the
for (int i=0; i<10; i++) { arr[i]=i; }
What is the "int" before the starter variable (i=0)?
What is the arr[i]=i in the reaction?
1 Answer
james south
Front End Web Development Techdegree Graduate 33,271 Pointsthe int sets the loop variable i to type integer. this is necessary here because it loops through an array and array indices are integers. if we were looping through, say, words in a string, we would use the appropriate type, string. arr[i] = i means that every trip through the loop, and index i in the array is set to i, so when the loop completes the arr will be [0,1,2,3,4,5,6,7,8,9]. arrays are 0-indexed, so the first element is index 0, and we get elements with the notation arr[index], so arr[3] is index 3, or the 4th element.