type defaults to 'int' in declaration of 'head_id'
时间: 2023-12-27 14:05:02 浏览: 60
This error occurs when a variable is declared without specifying its data type, and the default data type is assumed to be 'int'.
For example, if you declare a variable called 'head_id' without specifying its data type like this:
head_id;
The compiler will assume that it is an integer variable and allocate memory accordingly. However, if you intended it to be a different data type, such as a pointer or a float, this will result in errors and unexpected behavior.
To avoid this error, always specify the data type when declaring variables. For example:
int head_id;
float average_score;
char* name;
This will ensure that the correct amount of memory is allocated for the variable and prevent unexpected behavior in your program.