char str[]="S\065AB";
printf("\n%d", sizeof(str));

explain the output.
i am getting 5.

Recommended Answers

this is what it means fifth is null terminator 065 in oct is '5' check ascii table

#include <stdio.h>

int main()
{
   char str[]="S\065AB";
   char strSame[5] = { 'S','\065', 'A', 'B', '\0'};

   printf("str 1 %d \n", sizeof(str));
   printf("str 2 %d\n", sizeof(strSame));
   printf("same ? %d [%s] [%s]",strcmp(str, strSame),str, …
Jump to Post

use strlen

Jump to Post

All 5 Replies

this is what it means fifth is null terminator 065 in oct is '5' check ascii table

#include <stdio.h>

int main()
{
   char str[]="S\065AB";
   char strSame[5] = { 'S','\065', 'A', 'B', '\0'};

   printf("str 1 %d \n", sizeof(str));
   printf("str 2 %d\n", sizeof(strSame));
   printf("same ? %d [%s] [%s]",strcmp(str, strSame),str, strSame);   

   return 0;
}
commented: nice :) +14

use strlen

strlen find the exact length

use strlen

Maybe, but maybe not. Depends on what you want, strlen() and sizeof() may return different values such as when the buffer contains embedded '\0' characters.

strlen and sizeof should always return different values because strlen never includes the trailing '\0'. In a compleatly normal string such as "Hello World" with no embedded terminators strlen will return a value 1 less than sizeof returns.

It they don't return different values you have a buffer overrun in progress.

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts learning and sharing knowledge.