==> Learning to program can be tough--just ask anyone who's done it! Fortunately, a lot of problems happen over and over again--I've put together 8 of the most common problems that you'll run into as a new programmer. 1. Undeclared Variables int main(){ cin>>x; cout< "Huh? Why do I get an error?" Your compiler doesn't know what x means. You need to declare it as a variable. int main(){ int x; cin>>x; cout< 2. Uninitialized variables int count; while(count "Why doesn't my program enter the while loop?" In C++ variables are not initialized to zero. In the above snippet of code, count could be any value in the range of int. It might, for example, be 586, and in that situation the while loop's condition w...
We have discussed Asymptotic Analysis , and Worst, Average and Best Cases of Algorithms . The main idea of asymptotic analysis is to have a measure of efficiency of algorithms that doesn’t depend on machine specific constants, and doesn’t require algorithms to be implemented and time taken by programs to be compared. Asymptotic notations are mathematical tools to represent time complexity of algorithms for asymptotic analysis. The following 3 asymptotic notations are mostly used to represent time complexity of algorithms. 1) Θ Notation: The theta notation bounds a functions from above and below, so it defines exact asymptotic behavior. A simple way to get Theta notation of an expression is to drop low order terms and ignore leading constants. For example, consider the following expression. 3n 3 + 6n 2 + 6000 = Θ(n 3 ) Dropping lower order terms is always fine because there will always be a n0 after which Θ(n 3 ) beats Θn 2 ) irrespective of the co...
>>Why one should learn Java programming language? The answer to this question comprises of multiple reasons like its popularity, ease-to-learn nature, helpful open source tools and libraries etc. Gaining expertise in Java ensures a secure career with fat paychecks and the power to create applications with real-world applications. T here’s a long list of programming languages that continue to exist with their strengths and flaws, making our lives easier. Over the course of past 20 years, Java has proved that it’s one of the best programming languages around. However, I strongly don’t believe in any type of competition between different programming languages. During its journey, this free and open source programming language has achieved numerous milestones and proved its worth. With time, Java has evolved and established its place as an essential ingredient for making successful software and applications. The recent indexes of programming languages’ pop...
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