C program to convert character to an integer

C program to convert character to an integer

#include <stdio.h> #include <stdlib.h> int main(void) { /* initialize the character */ char ch='1'; int a; /* convert the character(1 byte) to integer(4 bytes) */ a=ch-'0'; /* print the ASCII value of character*/ printf("%d\n",ch); /* print the integer */ printf("%d\n",a); /* check the size of the character variable in bytes */ printf("ch=%d\n",sizeof(ch)); /* check the size of the converted integer variable in bytes using sizeof operator*/ printf("a=%d\n",sizeof(a)); return 0; }