fork download

copy

#include <stdlib.h>
#include <stdio.h>
 
int oper(int i1, int i2, char s)
{       
    if (s == '+')
        return (i1 + i2);
    else if (s == '-')
        return (i1 - i2);
    else if (s == '/')
        return (i1 / i2);
    else if (s == '*')
        return (i1 * i2);
    else if (s == '%')
        return (i1 % i2);
    return (0);
}
 
int eval_expr(char *str)
{
    int i;
    int i1;
    int i2;
    int k;
    int num;
    int op;
    int *n;
    char *o;
 
    i = 0;
    while (str[i])
    {
        if (str[i] > 47 && str[i] < 58)
            if (str[i+1] < 48 && str[i+1] > 57)
                num++;
        if ((str[i] > 39 && str[i] < 44) || str[i] == 37 || str[i] == 45 ||
                str[i] == 47)
            op++;
        i++;
    }
    n = (int *)malloc(sizeof(int)*num);
    o = (char *)malloc(sizeof(char)*op);
    i = 0;
    i1 = -1; 
    i2 = -1; 
    while (str[i])
    {   
        if (str[i] > 47 && str[i] < 58) 
        {   
            i1++;
            k = 0;
            while (str[i] > 47 && str[i] < 58) 
            {   
                k = k * 10; 
                k = k + (str[i] - '0');
                i++;
            }   
            n[i1] = k;
        }   
        if (str[i] == 40) 
        {   
            i2++;
            o[i2] = str[i];
        }   
        if (str[i] == 43 || str[i] == 45) 
        {   
            if (o[i2] != 40) 
            {   
                if (i1 > 0)
                {   
                    k = oper(n[i1 -1], n[i1], o[i2]);
                    i1--;
                    n[i1] = k;
                    i2--;
                }   
            }   
            else
            {   
                i2++;
                o[i2] = str[i];
            }   
        }   
        if (str[i] == 37 || str[i] == 42 || str[i] == 47) 
        {   
            if (o[i2] != 40 && o[i2] != 43 && o[i2] != 45) 
            {   
                if (i1 > 0)
                {   
                    k = oper(n[i1 -1], n[i1], o[i2]);
                    i1--;
                    n[i1] = k;
                    i2--;
                }   
            }   
            else
            {   
                i2++;
                o[i2] = str[i];
            }   
        }   
        if (str[i] == 41) 
        {   
            while (o[i2] != 40) 
            {   
                k = oper(n[i1 -1], n[i1], o[i2]);
                i1--;
                n[i1] = k;
                i2--;
            }   
        }   
        i++;
    }   
    while (i1 != 0)
    {   
        k = oper(n[i1 -1], n[i1], o[i2]);
        i1--;
        n[i1] = k;
        i2--;
    }   
    return n[i1];
}
 
int main()
{
    int a = eval_expr("3 + 42 * (1 - 2 / (3 + 4) - 1 % 21) + 1");
    printf("%d", a); 
    return 0;
}

Main.java:1: error: illegal character: '#'
#include <stdlib.h>
^
Main.java:1: error: class, interface, or enum expected
#include <stdlib.h>
         ^
Main.java:2: error: illegal character: '#'
#include <stdio.h>
^
Main.java:8: error: class, interface, or enum expected
    else if (s == '-')
    ^
Main.java:10: error: class, interface, or enum expected
    else if (s == '/')
    ^
Main.java:12: error: class, interface, or enum expected
    else if (s == '*')
    ^
Main.java:14: error: class, interface, or enum expected
    else if (s == '%')
    ^
Main.java:16: error: class, interface, or enum expected
    return (0);
    ^
Main.java:17: error: class, interface, or enum expected
}
^
Main.java:22: error: class, interface, or enum expected
    int i1;
    ^
Main.java:23: error: class, interface, or enum expected
    int i2;
    ^
Main.java:24: error: class, interface, or enum expected
    int k;
    ^
Main.java:25: error: class, interface, or enum expected
    int num;
    ^
Main.java:26: error: class, interface, or enum expected
    int op;
    ^
Main.java:27: error: class, interface, or enum expected
    int *n;
    ^
Main.java:28: error: class, interface, or enum expected
    char *o;
    ^
Main.java:30: error: class, interface, or enum expected
    i = 0;
    ^
Main.java:31: error: class, interface, or enum expected
    while (str[i])
    ^
Main.java:36: error: class, interface, or enum expected
        if ((str[i] > 39 && str[i] < 44) || str[i] == 37 || str[i] == 45 ||
        ^
Main.java:39: error: class, interface, or enum expected
        i++;
        ^
Main.java:40: error: class, interface, or enum expected
    }
    ^
Main.java:42: error: class, interface, or enum expected
    o = (char *)malloc(sizeof(char)*op);
    ^
Main.java:43: error: class, interface, or enum expected
    i = 0;
    ^
Main.java:44: error: class, interface, or enum expected
    i1 = -1; 
    ^
Main.java:45: error: class, interface, or enum expected
    i2 = -1; 
    ^
Main.java:46: error: class, interface, or enum expected
    while (str[i])
    ^
Main.java:51: error: class, interface, or enum expected
            k = 0;
            ^
Main.java:52: error: class, interface, or enum expected
            while (str[i] > 47 && str[i] < 58) 
            ^
Main.java:55: error: class, interface, or enum expected
                k = k + (str[i] - '0');
                ^
Main.java:56: error: class, interface, or enum expected
                i++;
                ^
Main.java:57: error: class, interface, or enum expected
            }   
            ^
Main.java:59: error: class, interface, or enum expected
        }   
        ^
Main.java:63: error: class, interface, or enum expected
            o[i2] = str[i];
            ^
Main.java:64: error: class, interface, or enum expected
        }   
        ^
Main.java:72: error: class, interface, or enum expected
                    i1--;
                    ^
Main.java:73: error: class, interface, or enum expected
                    n[i1] = k;
                    ^
Main.java:74: error: class, interface, or enum expected
                    i2--;
                    ^
Main.java:75: error: class, interface, or enum expected
                }   
                ^
Main.java:80: error: class, interface, or enum expected
                o[i2] = str[i];
                ^
Main.java:81: error: class, interface, or enum expected
            }   
            ^
Main.java:90: error: class, interface, or enum expected
                    i1--;
                    ^
Main.java:91: error: class, interface, or enum expected
                    n[i1] = k;
                    ^
Main.java:92: error: class, interface, or enum expected
                    i2--;
                    ^
Main.java:93: error: class, interface, or enum expected
                }   
                ^
Main.java:98: error: class, interface, or enum expected
                o[i2] = str[i];
                ^
Main.java:99: error: class, interface, or enum expected
            }   
            ^
Main.java:106: error: class, interface, or enum expected
                i1--;
                ^
Main.java:107: error: class, interface, or enum expected
                n[i1] = k;
                ^
Main.java:108: error: class, interface, or enum expected
                i2--;
                ^
Main.java:109: error: class, interface, or enum expected
            }   
            ^
Main.java:112: error: class, interface, or enum expected
    }   
    ^
Main.java:116: error: class, interface, or enum expected
        i1--;
        ^
Main.java:117: error: class, interface, or enum expected
        n[i1] = k;
        ^
Main.java:118: error: class, interface, or enum expected
        i2--;
        ^
Main.java:119: error: class, interface, or enum expected
    }   
    ^
Main.java:121: error: class, interface, or enum expected
}
^
Main.java:126: error: class, interface, or enum expected
    printf("%d", a); 
    ^
Main.java:127: error: class, interface, or enum expected
    return 0;
    ^
Main.java:128: error: class, interface, or enum expected
}
^
59 errors

Standard output is empty