How to concatenate string and int in C

Question

I need to form a string  inside each iteration of the loop  which contains the loop index i   for i 0 i lt 100 i           Shown in java-like code which I need working in c     String prefix    pre      String suffix     suff         This is the string I need formed        e g   pre 3 suff    String result   prefix   i   suffix      I tried using various combinations of strcat and itoa with no luck

User · Answer

Look at snprintf or  if GNU extensions are OK  asprintf  which will allocate memory for you

User · Answer

Use sprintf  or snprintf if like me you can t count  with format string  pre  d suff    For what it s worth  with itoa strcat you could do   char dst 12     pre    itoa i  dst 4  10   strcat dst    suff

User · Answer

Strings are hard work in C    include  lt stdio h gt   int main        int i     char buf 12       for  i   0  i  lt  100  i            snprintf buf  12   pre  d suff   i      puts string into buffer       printf   s n   buf      outputs so you can see it          The 12 is enough bytes to store the text  pre    the text   suff   a string of up to two characters   99   and the NULL terminator that goes on the end of C string buffers   This will tell you how to use snprintf  but I suggest a good C book

[c] How to concatenate string and int in C?

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