strcat : strcat « string.h « C Tutorial






ItemValue
Header filestring.h
Declarationchar *strcat(char *str1, const char *str2);
Functionconcatenates a copy of *str2 to *str1 and terminates *str1 with a null.
Returnreturns *str1.


You have to ensure that str1 is large enough to hold both its original contents and those of str2.

#include <stdio.h>
  #include <string.h>

  int main(void)
  {
    char s1[80], s2[80];

    printf("s1:");
    gets(s1);
    printf("s2:");
    gets(s2);

    strcat(s2, s1);
    printf(s2);

    return 0;
  }
s1:s
s2:2
2s








24.6.strcat
24.6.1.strcat