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auto和decltype区别和联系

我什么都布吉岛发布时间：2021-07-21 22:33:32 ，浏览量：10

auto有简化声明的作用

那肯定时为了简化啊。简单说说auto在实际编程中的简化场景：

auto对于大多数情况来说特别有用，如范围for

std::vector dvec{1,2,3,4,5,6,7};
for(auto r:dvec) std::cout


    
        
            
                
                
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