Create main.c

main.c

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+//
+//  main.c
+//  Long_number_count
+//
+//  Created by Eric on 15-8-14.
+//  Copyright (c) 2015年 Bakantu Eric. All rights reserved.
+//
+
+#include <stdio.h>
+#include <stdlib.h>
+
+char *add_count(char const *front, char const *last);
+
+int main(int argc, const char * argv[]) {
+    long number_long_max = 0;
+    printf("NUMBER_LONG: ");
+    scanf("%ld",&number_long_max);
+    
+    char *front = (char *)malloc(sizeof(char)*number_long_max), *p_front = front;
+    char *last = (char *)malloc(sizeof(char)*number_long_max), *p_last= last;
+    
+    for (int i = 0; i < number_long_max; i++) {
+        *p_front++ = 48;
+        *p_last++ = 48;
+    }
+
+    printf("INPUT: ");
+    scanf("%s",front);
+    
+    
+    printf("INPUT: ");
+    scanf("%s",last);
+    
+    char *final = add_count(front,last);
+    if (final == NULL){
+        return -1;
+    }
+    char *p_final = final;
+    
+    while (*p_final++ != '\0') printf("%c",*p_final);
+    printf("\n");
+    free(final);
+    free(front);
+    free(last);
+    
+    return 0;
+}
+
+char *add_count(char const *front, char const *last){
+    char *p_front = front, *p_last = last;
+    int string_long_front = 0 ,string_long_max;
+    
+    while (*p_front++ != '\0') string_long_max++;
+    
+    /*while (*p_front++ != '\0') string_long_front++;
+    while (*p_last++ != '\0') string_long_last++;
+    if (string_long_last >= string_long_front) string_long_final = string_long_last;
+    else string_long_final = string_long_front;*/
+    
+    char *final = (char *)malloc(sizeof(char)*(string_long_max+3)), *p_final = final;
+    for (int i = 0; i < string_long_max; i++) {
+        *p_final++ = 48;
+    }
+    
+    if (final == NULL) {
+        printf("Error in get the memory!");
+        return NULL;
+    }
+    
+    int n_final, n1_final;
+    p_final = final;
+    p_front--; p_last--;
+    p_front--; p_last--;
+    *p_final = '\0';p_final--;
+    while (*p_front != '\0' || *p_last != '\0'){
+        *p_final += (((((int)*p_front) - 48) +(((int)*p_last) - 48)) % 10);
+        n_final = (*p_final - 48) / 10;
+        n1_final = ((int)(((((int)*p_front) - 48) +(((int)*p_last) - 48)) / 10));
+        *(++p_final) += (n_final+n1_final);
+        p_front--; p_last--;
+    }
+    
+    return final;
+    
+}