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#include <stdio.h>
#include <stdlib.h>
 
 
typedefstruct field{
    char name[20];
    double  cm,kg,BMI;
    structfield *next;
    int x;
}cell;
 
 
int main(void){
 
    cell head,*a,*b,*new;
 
 
    head.next = NULL;
 
    while (1) {
        new = (cell *)malloc(sizeof(cell));
        scanf("%s",&new->name);
 
        if(new->name[0] != '0'){
 
            scanf("%lf",&new->cm);
            scanf("%lf",&new->kg);
 
            new->BMI = new->kg / (0.0001*new->cm*new->cm);
 
            a = &head;
            b = b->next;
 
            while (b != NULL && new->BMI > b->BMI) {
                a = b;
                b = b->next;
            }
 
            new->next = b;
            a->next = new;
 
        }
        else {
            break;
        }
 
    }
 
    for (a = head.next; a != NULL; a = a->next) {
        printf("%f %f %f %s\n", a->BMI,a->cm,a->kg,a->name);
    }
 
    return0;
 
}

prog.cpp:5: error: ‘typedefstruct’ does not name a type
prog.cpp:10: error: expected constructor, destructor, or type conversion before ‘;’ token
prog.cpp: In function ‘int main()’:
prog.cpp:15: error: ‘cell’ was not declared in this scope
prog.cpp:15: error: expected `;' before ‘head’
prog.cpp:18: error: ‘head’ was not declared in this scope
prog.cpp:21: error: expected type-specifier before ‘=’ token
prog.cpp:21: error: expected primary-expression before ‘)’ token
prog.cpp:21: error: expected `;' before ‘malloc’
prog.cpp:22: error: expected type-specifier before ‘->’ token
prog.cpp:22: error: lvalue required as unary ‘&’ operand
prog.cpp:24: error: expected type-specifier before ‘->’ token
prog.cpp:24: error: expected `)' before ‘->’ token
prog.cpp:26: error: expected type-specifier before ‘->’ token
prog.cpp:26: error: lvalue required as unary ‘&’ operand
prog.cpp:27: error: expected type-specifier before ‘->’ token
prog.cpp:27: error: lvalue required as unary ‘&’ operand
prog.cpp:29: error: expected type-specifier before ‘->’ token
prog.cpp:29: error: expected `;' before ‘->’ token
prog.cpp:31: error: ‘a’ was not declared in this scope
prog.cpp:32: error: ‘b’ was not declared in this scope
prog.cpp:34: error: expected type-specifier before ‘->’ token
prog.cpp:34: error: expected `)' before ‘->’ token
prog.cpp:34: error: expected primary-expression before ‘->’ token
prog.cpp:34: error: expected `;' before ‘)’ token
prog.cpp:39: error: expected type-specifier before ‘->’ token
prog.cpp:39: error: expected `;' before ‘->’ token
prog.cpp:40: error: expected type-specifier before ‘;’ token
prog.cpp:49: error: ‘a’ was not declared in this scope
prog.cpp:53: error: ‘return0’ was not declared in this scope

Standard output is empty