in for loop video,it is saying that we must use for loop when we know for how many time the loop will run and use while loop when we don’t know for how many times the loop will run like to check a number is prime or not we will use while loop but we can do this program using for loop also. so what is the difference between while and for loop.
CPP - Loops - For loop
Hello @Sheenagoyal21,
You have taken a wrong example to understand this.
In your example, you can use any of the loop.
Now, suppose you are required to write a program that takes input until -1 is not received as input.
int n;
while(true){
cin>>n;
if(n==-1){
break;
}
}
Thus, it is preferred to use while loop in such condition.
Hope, this would help.
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