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  1. 	/* strindex which returns rightmost occurance */
  2.  
  3. #include<stdio.h>
  4.  
  5. int mstrindex(char source[],char searchfor[]);
  6.  
  7. int main(void)
  8. {
  9.     char line[] = "abcdedfabcde";
  10.     char pattern[] = "abc";
  11.  
  12.     int found;
  13.  
  14.     /* It should match the a the 7th position. */
  15.  
  16.     found = mstrindex(line, pattern);
  17.  
  18.     printf("Found the right index: %d\n", found);
  19.  
  20. }
  21.  
  22. int mstrindex(char s[],char t[])
  23. {
  24.     int i,j,k, result;
  25.  
  26.     result = -1;
  27.  
  28.     for(i=0;s[i]!='\0';i++)
  29.     {
  30.         for(j=i,k=0;t[k]!='\0' && s[j]==t[k];j++,k++)
  31.             ;
  32.         if(k>0 && t[k] == '\0')
  33.             result = i;
  34.     }
  35.     return result;
  36. }
  37.  
  38.  
Success #stdin #stdout 0s 4300KB
comments (?)
stdin
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Standard input is empty
stdout
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Found the right index: 7
https://ideone.com/uWSppt
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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