Why is while loop used if the work can be done more efficiently by a for loop in C programming language?

For loops (and for each loops especially) are definitely more common, but sometimes you just need a while loop to get the job done. for loop is 'counter-controlled loop' where as while loop if you were making a game and needed to make the game loop over and over, you could use a while loop that would run infinitely by using. while (i = 1) { //your logic } read less

for loops basically is used when developer knows number of iterations to be performed is known already : Example : printing table of 10 up to 10 i.e 10 * 10=100 we know number of iteration=10 so for loop can be used for(i=1;i<=10;i++){ printf("%d \n",i); // already knew iteration=10 so for loop } WHILE loop on other hand is used if developer s not sure or uncertain about number of iterations prior. Example C program to reverse the number : here number n can be anything inputted by user so developer is not sure about number of iteration so while loop while(n != 0) { remainder = n%10; reversedNumber = reversedNumber*10 + remainder; n /= 10; } we can solve this by using for loop also but it is recommended if number of itertion not know use WHILE else if known then FOR. read less