Read data from terminal in C (ASCII input), I need a help to develop a C code to read data from terminal in order to convert ascii to number.

The terminal should accept a input from the user (Example : new temperature value) and convert into integer. This integer value will be transferred across the interface (RS232 interface) to the memory.

example : the message structure -
struct memoryTag1;
typedef struct memoryTag1{

char a[10]= {'+','0','2','6','.','5','E','A','\r'}; // first five bits is the new temperature value (+26.5), two bits (euipment name- EA), carriage reurn.

char b[10]= {'-','0','2','4','.','5','E','B','\r'};

char c[8]= {'+','0','2','0','E','C','\r'};

}Memory1;

thank you in advance.