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  1. #include <stdio.h>
  2.  
  3. #include <stdio.h>
  4. #include <stdlib.h>
  5. #include <string.h>
  6.  
  7. char* strrpl(char *str, char* find, char *replace)
  8. {
  9.     int i;
  10.     char *pt = strstr(str, find), *firstStr;
  11.     if (!pt) return str;
  12.     firstStr = calloc(100, sizeof(char));
  13.     // copy just until i find what i need to replace
  14.     // i tried to specify the length of firstStr just with pt - str
  15.     strncpy(firstStr, str, strlen(str) - strlen(pt));  
  16.  
  17.     strcat(firstStr, replace);
  18.     strcat(firstStr, pt + strlen(find));
  19.  
  20.     for(i = 0; i < strlen(firstStr); i++)
  21.         str[i] = firstStr[i];
  22.     return str;
  23. }
  24.  
  25. int main()
  26. {
  27.     char *s, *s1, *s2;
  28.     s = (char* )malloc(100 * sizeof(char));
  29.     s1 = (char* )malloc(100 * sizeof(char));
  30.     s2 = (char* )malloc(100 * sizeof(char));
  31.     scanf("%s", s1);
  32.     scanf("%s", s2);
  33.     scanf("%s", s);
  34.  
  35.     printf("%s", strrpl(s1, s2, s));
  36.     return 0;
  37. }
  38.  
Success #stdin #stdout 0s 2384KB
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https://ideone.com/BT3sa2
language:
C99 (gcc 8.3)
created:
11 years ago
visibility:
secret

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