convert char* to int in C : Is there any way to convert char* to int? 

Got string(string1) of characters received from UART

this string looks like: {3600,32,300}

    char t1_s[32],t2_s[32],t3_s[32];
    
    		static char string1[15];

    		strcpy(t3_s, strtok(string1 , ","));
    		strcpy(t2_s, strtok(NULL , ","));
    		strcpy(t1_s, strtok(NULL , ","));
    
    		t1= t1_s - '0';
    		t2= t2_s - '0';
    		t3= t3_s - '0';

and compiller get warning

#515-D a value of type "char *" cannot be assigned to an entity of type "int"	main.c	

Need to get values t1_s,t2_s,t3_s to integer.

