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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main() {
  5.     char s1[] = "Hello World";
  6.     char s2[] = "World"; // Add the closing quotation mark
  7.     char *s3 = strstr(s1, s2);
  8.     if (s3 == NULL)
  9.         printf("Not found.\n");
  10.     else
  11.     	printf("s3: %ld s1: %ld ", s3, s1);
  12.         printf("Found position = %ld\n", s3 - s1); // Use %ld for pointer subtraction
  13.     return 0;
  14. }
  15.  
Success #stdin #stdout 0.01s 5280KB
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stdin
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Standard input is empty
stdout
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s3: 140732084438210 s1: 140732084438204 Found position = 6
https://ideone.com/lMkz04
language:
C++ (gcc 8.3)
created:
13 days ago
visibility:
public

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