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Update 'cv3/program.c'

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This commit is contained in:
Maryna Kravtsova 2020-10-21 14:19:37 +00:00
parent 69f2c49596
commit 27ce4ed117
1 changed files with 66 additions and 44 deletions
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106
cv3/program.c
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@ -1,9 +1,9 @@
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#define STACK_SIZE 100
#define STACK_SIZE 10
struct stack {
float values[STACK_SIZE];
@ -11,17 +11,29 @@ struct stack {
};
void push(struct stack* stack,float values){
assert(stack->size < STACK_SIZE);
stack->values[stack->size] = values;
stack->size += 1;
if(stack->size < 10){
stack->values[stack->size] = values;
stack->size += 1;
}
else{
printf("full stack\n");
exit(0);
}
}
float pop(struct stack *stack){
assert(stack->size > 0);
float values = stack->values[stack->size-1];
stack->size -= 1;
return values;
if(stack->size > 0){
float value = stack->values[stack->size-1];
stack->size -= 1;
return value;
}
else{
printf("not enough operands\n");
exit(0);
}
}
void print_stack(struct stack *stack){
int i;
int len = stack->size - 1;
@ -30,9 +42,8 @@ void print_stack(struct stack *stack){
}
if(stack->size != 0){
printf("%0.2f ", stack->values[i]);
printf("\n");
}
printf("\n");
}
@ -40,44 +51,55 @@ int main() {
struct stack mystack;
memset(&mystack, 0, sizeof(struct stack));
int i = 0;
float z;
for(i = 0; i < 10000; i++){
for(i = 0; i < 100; i++){
char line[10];
char *x = fgets(line, 10, stdin);
float r = 0;
float z = 0;
if(!isdigit(line[0]) && line[0] != '+' && line[0] != '*' && line[0] != '/' && line[0] != '-'){
printf("no input");
if(line[1] != 0 && x != NULL){
if(!isdigit(line[0]) && line[0] != '+' && line[0] != '*' && line[0] != '/' && line[0] != '-'){
printf("bad input\n");
return 0;
}
if(line[0] == '+'){
r = pop(&mystack) + pop(&mystack);
}
else if(line[0] == '-'){
z = pop(&mystack);
r = pop(&mystack) - z;
}
else if(line[0] == '*'){
r = pop(&mystack) * pop(&mystack);
}
else if(line[0] == '/'){
z = pop(&mystack);
if(z == 0){
printf("division by zero\n");
return 0;
}
else {
r = pop(&mystack) / z;
}
}
else {
r = strtof(line,&x);
}
push(&mystack,r);
print_stack(&mystack);
}
else{
printf("no input\n");
return 0;
}
if(line[0] == '+'){
r = pop(&mystack) + pop(&mystack);
}
else if(line[0] == '-'){
z = pop(&mystack);
r = pop(&mystack) - z;
}
else if(line[0] == '*'){
r = pop(&mystack) * pop(&mystack);
}
else if(line[0] == '/'){
z = pop(&mystack);
if(z != 0.0){
r = pop(&mystack) / z;
}
}
else {
r = strtof(line,&x);
}
push(&mystack,r);
print_stack(&mystack);
}
return 0;
}