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POwhy does C code pauses after i give ./a.out?
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copied!<pre><code>#include<stdlib.h> #include<stdio.h> #include<string.h> //This program is a sorting application that reads a sequence of numbers //from a file and prints them on the screen . The reading from the file here, //is a call back function . typedef int (*CompFunc)(const char* , const char* ); typedef int (*ReadCheck)(char nullcheck); char array[100]; //Let this function be done in the library itself . It doesn't care as to //where the compare function and how is it implemented . Meaning suppose //the function wants to do sort in ascending order or in descending order //then the changes have to be done by the client code in the "COMPARE" function //who will be implementing the lib code . void ReadFile(FILE *fp,ReadCheck rc) { char a; char d[100]; int count = 0,count1=0; a=fgetc(fp); while(1 != (*rc)(a)) { if(a=='\0') { //d[count1]='\0'; strcpy(&array[count],d); count=count+1; } else { d[count1]=a; count1=count1+1; } } } void Bubblesort(char* array , int size , int elem_size , CompFunc cf) { int i,j; int *temp; for( i=0;i < size ;i++) { for ( j=0;j < size -1 ; j++) { // make the callback to the comparision function if(1 == (*cf)(array+j*elem_size,array+ (j+1)*elem_size)) { //interchanging of elements temp = malloc(sizeof(int *) * elem_size); memcpy(temp , array+j*elem_size,elem_size); memcpy(array+j*elem_size,array+(j+1)*elem_size,elem_size); memcpy(array + (j+1)*elem_size , temp , elem_size); free(temp); } } } } //Let these functions be done at the client side int Compare(const char* el1 , const char* el2) { int element1 = *(int*)el1; int element2 = *(int*)el2; if(element1 < element2 ) return -1; if(element1 > element2) return 1 ; return 0; } int ReadChecked(char nullcheck) { if (nullcheck=='\n') return 1; else return 0; } int main() { FILE *fp1; int k; fp1=fopen("readdata.txt","r"); ReadFile(fp1,&ReadChecked); Bubblesort((char*)array,5,sizeof(array[0]),&Compare); printf("after sorting \n"); for (k=0;k<5;k++) printf("%d",array[k]); return 0; } </code></pre>

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