int main(){
char a[1000],c[1000],b[1000];
scanf("%s",a);
printf("\nGiven String : {%s}\n",a);
replaceRange(a,c);
replaceSq(c);
replaceBraces(c);
addPlus(c,b);
printf("\nModified String : {%s}\n",b);
return 0;
}
GUIEquationEditor::GUIEquationEditor(QStringList SingelValues, QStringList Vectors ,QWidget *parent) :
QDialog(parent),
ui(new Ui::GUIEquationEditor)
{
ui->setupUi(this);
ui->listWidget_Values->addItems(SingelValues);
ui->listWidget_Vectors->addItems(Vectors);
QObject::connect(ui->pushButton_plus, SIGNAL(clicked()), this, SLOT(addPlus()));
QObject::connect(ui->pushButton_minus, SIGNAL(clicked()), this, SLOT(addMinus()));
QObject::connect(ui->pushButton_multi, SIGNAL(clicked()), this, SLOT(addMulti()));
QObject::connect(ui->pushButton_cos, SIGNAL(clicked()), this, SLOT(addCos()));
QObject::connect(ui->pushButton_sin, SIGNAL(clicked()), this, SLOT(addSin()));
QObject::connect(ui->pushButton_tan, SIGNAL(clicked()), this, SLOT(addTan()));
QObject::connect(ui->pushButton_nov, SIGNAL(clicked()), this, SLOT(addNov()));
QObject::connect(ui->pushButton_random, SIGNAL(clicked()), this, SLOT(addRandom()));
QObject::connect(ui->pushButton_if, SIGNAL(clicked()), this, SLOT(addIf()));
QObject::connect(ui->pushButton_values, SIGNAL(clicked()), this, SLOT(addValue()));
QObject::connect(ui->pushButton_vectors, SIGNAL(clicked()), this, SLOT(addVector()));
}
void infixToPostFix(const char *input,char *postfix){
// the strings are already assumed to be present
// currently symbols ---> '-' range operator
// '|' for union
// '*' as usual
// []() are essentially the same
// permissible symbols are Alphabets,numerical,dot and everything else
char a[1000],b[1000],c[1000];
copyString(input,a);
printf("\nGiven Input :\n{%s}\n",a);
replaceBraces(a);
printf("\nAfter changing braces :\n{%s}\n",a);
replaceRange(a,c);
printf("\nAfter replacing the range operator :\n{%s}\n",c);
addPlus(c,b);
printf("\nAfter adding the extra +(s) :\n{%s}\n",b);
/***********We will process on the string b********************/
stack S;
queue Q;
init_queue(&Q);
init_stack(&S);
int i=0;
char stacktop;
while(1){
if(b[i]=='\0'){
// break the while loop and transfer everything stack to queue
break;
}
switch(b[i]){
case '+':{
while(1){
if(isStackEmpty(&S)==1){
break;
}
stacktop=stack_top(&S);
if(stacktop=='+'||stacktop=='|'||stacktop=='*'){
stack_pop(&S);
enqueue(&Q,stacktop);
}else{
break;
}
}
stack_push(&S,b[i]);
break;
}
case '|':{
while(1){
if(isStackEmpty(&S)==1){
break;
}
stacktop=stack_top(&S);
if(stacktop=='|'||stacktop=='*'){
stack_pop(&S);
enqueue(&Q,stacktop);
}else{
break;
}
}
stack_push(&S,b[i]);
break;
}
case '*':{
while(1){
if(isStackEmpty(&S)==1){
break;
}
stacktop=stack_top(&S);
if(stacktop=='*'){
stack_pop(&S);
enqueue(&Q,stacktop);
}else{
break;
}
}
stack_push(&S,b[i]);
break;
}
case '(':{
stack_push(&S,b[i]);
break;
}
case ')':{
while(1){
if(isStackEmpty(&S)==1){
printf("\nParenthesis Missmatch !!\n");
return;
}
stacktop=stack_top(&S);
if(stacktop=='('){
stack_pop(&S);
break;
}else{
stack_pop(&S);
enqueue(&Q,stacktop);
// break;
}
}
break;
}
default:{
// otherwise the character is taken as a valid symbol
enqueue(&Q,b[i]);
}
}
i++;
}
while(1){
if(isStackEmpty(&S)==1){
break;
}
stacktop=stack_top(&S);
if(stacktop=='('||stacktop==')'){
printf("\nParenthesis Missmatch!!!\n");
return;
}
enqueue(&Q,stacktop);
stack_pop(&S);
}
printf("\nPostfix created successfully\n");
queueToString(&Q,postfix);
printf("\nPostfix\n :{%s}\n",postfix);
return;
}
