The "C language" writes a function that converts a numeric string to a number corresponding to that string (including positive integers, negative integers)

/* Write a function that converts a numeric string to a number corresponding to the string (including positive integers, negative integers) For example: "  12" returns-123 "return-123 function prototype: int my_atoi (char *str) */#include < Stdio.h>int My_atoi (char const *STR) {int sum = 0;int P;int n = 0;if (*str = = '-') {n = 1;str++;} while (*str! = ')} {if (* (str) >= ' 0 ' && * (str) <= ' 9 ') {p = (int) (*STR)-sum = sum * ten + P ; str++;}} if (n = = 1) {sum =-sum;} return sum;} int main () {    char *p = " -123";p rintf ("converted to:%d\n", My_atoi (p)); return 0;} 

The "C language" writes a function that converts a numeric string to a number corresponding to that string (including positive integers, negative integers)