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// Csae study: Chapter-8, Page No:253
// 2.Processing of a customer list
CUSTOMERS=10;
printf(" Input names and telephone numbers\n");
printf(" [Names must have First,Second and Last_name]\n");
for i=1:CUSTOMERS
//Read data
[first_name(i),second_name(i),surname(i),telephone(i)]=scanf("%s %s %s %s");
//Converting full name to surname with initials
l1=length(surname(i)); //Compute length of surname at i
name(i)=strncpy(surname(i),l1) ;
name(i)=strcat([name(i),',']);
dummy(1)=part(first_name(i,1),1);
name(i)=strcat([name(i),dummy]);
name(i)=strcat([name(i),'.']);
dummy(1)=part(second_name(i,1),1);
name(i)=strcat([name(i),dummy]);
end
//Alphabetical odering of surnames
for i=1:CUSTOMERS //Outer loop begins
for j=2:CUSTOMERS-i+1 //Inner loop begins
k=strcmp(name(j-1),name(j));
if(k>0) then
//Swaping names
l1=length(name(j-1));
l2=length(name(j));
dummy=strncpy(name(j-1),l1);
name(j-1)=strncpy(name(j),l2);
l3=length(dummy);
name(j)=strncpy(dummy,l3);
//Swapping telephone numbers
l3=length(telephone(j-1));
l4=length(telephone(j));
dummy=strncpy(telephone(j-1),l3);
telephone(j-1)=strncpy(telephone(j),l4);
telephone(j)=strncpy(dummy,l3);
end
end //Inner loop ends
end //Outer loop ends
//Printing alphabetical list
disp("CUSTOMER LIST IN ALPHABETICAL ORDER");
for i=1:CUSTOMERS
printf("%-20s\t %-10s\n",name(i),telephone(i));
end
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