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Uhhh, the mod operator is not the solution to that problem though. In reality you'd only use a mod operator if you were doing things like sorting into 4 column

Uhhh, the mod operator is not the solution to that problem though. In reality you'd only use a mod operator if you were doing things like sorting into 4 columns or doing an operation on every 3rd thing. And it's not a concept that is introduced at school. Now I try to think of it, I think I only picked up mod when I was learning rounding in my first language and the man page happened to mention modulus at the same time.

x0x0 12y ago
The mod operator isn't the solution to that problem, but that problem shoves integer division in your face. If a dev sees that and isn't curious enough to understand there is a division operator and a remainder operator, just like when you studied fractions in 3rd grade, I don't know that I want to work with that person. And every dev should have hit the remainder operator at bare minimum when they had a long running loop and wanted to print a status every kth operation, eg for(int i=0; i < 100000000; i++){ // some operation if(i % 100000 == 0) printf("** operating on count %d\n", i); } or when processing a big file, printing every k lines; or when running a slow operation, printing every k seconds; or ...
- mattmanser 12y ago
  No, because for most of those problems there's an easy alternative, declare another counter variable and you can just go: z++; if(z>100000) { print x; z=0; } When I was taught maths there was no emphasis on remainders and it certainly wasn't denoted with a % sign. I vaguely remember writing something like 12r3 in primary school. The r meaning remainder. A brief search on SO and lo and behold: http://stackoverflow.com/questions/1504420/c-what-does-the-percentage-sign-mean http://stackoverflow.com/questions/1504420/c-what-does-the-p... Viewed 38,000 times. Every language probably has a similar question.

x0x0 12y ago

The mod operator isn't the solution to that problem, but that problem shoves integer division in your face. If a dev sees that and isn't curious enough to understand there is a division operator and a remainder operator, just like when you studied fractions in 3rd grade, I don't know that I want to work with that person. And every dev should have hit the remainder operator at bare minimum when they had a long running loop and wanted to print a status every kth operation, eg for(int i=0; i < 100000000; i++){ // some operation if(i % 100000 == 0) printf("** operating on count %d\n", i); } or when processing a big file, printing every k lines; or when running a slow operation, printing every k seconds; or ...

mattmanser 12y ago
No, because for most of those problems there's an easy alternative, declare another counter variable and you can just go: z++; if(z>100000) { print x; z=0; } When I was taught maths there was no emphasis on remainders and it certainly wasn't denoted with a % sign. I vaguely remember writing something like 12r3 in primary school. The r meaning remainder. A brief search on SO and lo and behold: http://stackoverflow.com/questions/1504420/c-what-does-the-percentage-sign-mean http://stackoverflow.com/questions/1504420/c-what-does-the-p... Viewed 38,000 times. Every language probably has a similar question.