How to convert integer to string in C? [duplicate]
Use sprintf():
int someInt = 368;char str[12];sprintf(str, "%d", someInt);All numbers that are representable by int will fit in a 12-char-array without overflow, unless your compiler is somehow using more than 32-bits for int. When using numbers with greater bitsize, e.g. long with most 64-bit compilers, you need to increase the array size—at least 21 characters for 64-bit types.
Making your own itoa is also easy, try this :
char* itoa(int i, char b[]){ char const digit[] = "0123456789"; char* p = b; if(i<0){ *p++ = '-'; i *= -1; } int shifter = i; do{ //Move to where representation ends ++p; shifter = shifter/10; }while(shifter); *p = '\0'; do{ //Move back, inserting digits as u go *--p = digit[i%10]; i = i/10; }while(i); return b;}or use the standard sprintf() function.
That's because itoa isn't a standard function. Try snprintf instead.
char str[LEN];snprintf(str, LEN, "%d", 42);