1 #include <stdio.h> 2 #include <stdlib.h> 3 4 #define MAX_LEN 100 5 #define ERR_MAX_STR_LEN "Err: the entered number is too big" 6 7 8 int main ( void ) { 9 10 char buffer[MAX_LEN], str1[MAX_LEN], str2[MAX_LEN]; 11 char dest[MAX_LEN]; 12 int i, j, num; 13 14 if(fgets(str1, MAX_LEN, stdin) == NULL) { 15 return 1; 16 } 17 18 // This part counts the length of the first string 19 // and replaces the new line character for a blank space; 20 for(i = 0; str1[i] != '\0'; i++) 21 if(str1[i] == '\n') 22 str1[i] = ' '; 23 str1[i + 1] = '\0'; 24 25 if(fgets(str2, MAX_LEN, stdin) == NULL) { 26 return 1; 27 } 28 29 if(fgets(buffer, MAX_LEN, stdin) == NULL) { 30 return 1; 31 } 32 33 num = atoi(buffer); 34 35 // This part checks if the input number is bigger than 36 // the length of the first string; 37 if(num > i) { 38 fprintf(stderr, ERR_MAX_STR_LEN"\n"); 39 return 1; 40 } 41 42 43 // Removes the new line chracter from string two; 44 for(i = 0; str2[i] != '\0'; i++) 45 if(str2[i] == '\n') 46 str2[i] = '\0'; 47 48 for(i = 0, j = 0; str2[j] != '\0'; i++) { 49 if((i <= num) && (str1[i] != '\0')) { 50 dest[i] = str1[i]; 51 } else { 52 dest[i] = str2[j]; 53 j++; 54 } 55 } 56 printf("%s\n", dest); 57 return 0; 58 }
