分段错误（核心转储）程序退出代码：139

Hi guys this code seems to work but the function getMax goes in segmentationFalut (core dumped) and it returns me the code 139. Maybe I've done some error with index but I can't recognieze where is the wrong part..can someone help me?? All the other funcition seems to be writed weel the only one that gives me the error is getMax. Down here the code!Hi guys this code seems to work but the functio