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The 25 lines of code are as follows.

hash include open angle bracket pthread.h close angle bracket

hash include open angle bracket stdio.h close angle bracket

hash include open angle bracket stdlib.h close angle bracket

hash define NUMBER under score OF under score THREADS 10

void asterisk print under score hello under score world open parenthesis void asterisk tid close parenthesis

open curly bracket

forward slash asterisk This function prints the thread's identifier and then exits. asterisk forward slash

printf open parenthesis double quote Hello World. Greetings from thread percent d backward slash n double quote coma tid close parenthesis semi colon

pthread under score exit open parenthesis NULL close parenthesis semi colon

close curly bracket

int main open parenthesis int argc coma char asterisk argvopen close box bracket close parenthesis

open curly bracket

forward slash asterisk The main program creates 10 threads and then exits. asterisk forward slash

pthread under score t threadsopen box bracket NUMBER under score OF under score THREADSclose box bracket semi colon

int status coma i semi colon

for open parenthesis i equals to 0 semi colon i less than NUMBER under score OF under score THREADS semi colon i plus plus close parenthesis open curly bracket

printf open parenthesis double quote Main here. Creating thread percent d backward slash n double quote coma i close parenthesis semi colon

status equals to pthread under score create open parenthesis &threadsopen box bracket i close box bracket coma NULL coma print under score hello under score world coma open parenthesis void asterisk close parenthesis i close parenthesis

if open parenthesis status exclamation mark equals to 0 close parenthesis open curly bracket

printf open parenthesis double quote Oops. pthread under score create returned error code percent d backward slash n double quote coma status close parenthesis semi colon

exit open parenthesis negative 1 close parenthesis semi colon

close curly bracket

exit open parenthesis NULL close parenthesis semi colon

close curly bracket

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