what does this program do?

Question

int main()
{
    int a = 68, b = 80;
    char *ch;
    ch = (char*)malloc(10);
    sprintf(ch,"%d + %d",a,b);
    printf("%s",ch);
  
    return 0;
}

Answer 1

Why not copy and paste it into the OnlienGDB compiler and see the result for yourself?

Anyway, the output is "68 + 80" (without the quotes of course).

Answer 2

dynamically allocate a single large block of memory

o/p: 68 + 80