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dbotkin
Joined: 08 Sep 2003
Posts: 197
Location: Omaha NE USA
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| sizeof() and strlen() question |
 Posted: Mon Feb 09, 2004 11:44 am |
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Am I correct in my understanding that sizeof() will return the allocated space for an array, while strlen() will return the length of a string within that array?
In other words, if I have an array buffer[20] with a 10-character, null terminated string, strlen(buffer) would return 10 while sizeof(buffer) would return 20. Correct? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Feb 09, 2004 12:01 pm |
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| That is the way it's supposed to work, yes. |
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dbotkin
Joined: 08 Sep 2003
Posts: 197
Location: Omaha NE USA
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| Posted: Mon Feb 09, 2004 3:14 pm |
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| Thought so. Thanks! |
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Kasper
Joined: 14 Jan 2004
Posts: 88
Location: Aurora, Ontario, Canada
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| Posted: Fri May 21, 2004 12:33 pm |
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small question about strlen:
| Code: |
#define Win_Log_Alarm "Alarm"
fprintf(PORT2,"strlen=[%u] ",strlen(Win_Log_Alarm));
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the string length is always 0... what would be the better way of measuring the length of the string "alarm" |
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Charlie U
Joined: 09 Sep 2003
Posts: 183
Location: Somewhere under water in the Great Lakes
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| Posted: Fri May 21, 2004 4:17 pm |
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Try this:
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#define Win_Log_Alarm "Alarm"
int string_temp[10] = {0,0,0,0,0,0,0,0,0,0};
strcpy(string_temp, Win_Log_Alarm);
fprintf(PORT2,"strlen=[%u] ",strlen(string_temp));
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Let us know if this works for you. |
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