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- #include <pthread.h>#include <stdio.h>#include <unistd.h>#include <stdlib.h> int count = 0; void *threadfunc(void *arg){ cout<<"Thread Complete\n"; count++; return NULL; } int main(){ count = 0; pthread_t A,B,C;pthread_create(&A, NULL, threadfunc, NULL); pthread_create(&B, NULL, threadfunc, NULL); pthread_create(&C, NULL, threadfunc, NULL); while(count<50) {pthread_join(A, NULL); if(count<50) pthread_join(B, NULL); if(count<50) pthread_join(C, NULL); } return 0; } What is wrong?Insert locks into the following two functions for stack operations assuming the two functions are executed in two threads. int Push(int stack[ ], int *top, int new_element){ stack[top]= new_element; top++; return 0; } int Pop(int stack[ ], int *top, int *top_element){ if (top>0) { top_element= stack[top]; top--; return 0; } else return -1; \\ empty stack }What are the pid values?
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