free command

i have the following variable
char text1[30]=" ";
char text2[30]=":";
then after putting some values in text1 and text2 i do
strcat(text1,text2);
then i need to clear text1 and text2 i tried the free command but it gave me a segmentation error....what is wrong??

i am using C in linux

free() is used to free memory previously allocated with malloc()/calloc() functions.

Code:

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text1[0] = '\0'; /* Or text1[0] = 0; */

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does the trick. You could also clear all characters with:

Code:

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memset(text1, 0, 30); /* 30 is the size of text1[] array. */

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If you're unsure what a function does, using the man pages is a good idea, for example man free.