pi2.cをリフォーマットしてみた （コンパイル時に警告が出るので gcc -w pi2.cでコンパイルしてね）

pi2_reformat.c

char mes0[] = { 0xe8, 0xa8, 0x88, 0xe7, 0xae, 0x97, 0, 0, 0, 0, 0, 0 , 0},
     mes1[] = { 0, 0, 0, 0, 0, 0, 0xe5, 0x9b, 0x9e, 0xe6, 0x95, 0xb0, 0xe3, 0x82, 0x92, 0xe5, 0x85, 0xa5, 0xe5, 0x8a, 0x9b, 0x3a, 0x20, 0, 0, 0, 0 } ,
     mes2[] = { 0x25, 0x6c, 0x6c, 0x64, 0 },
     mes3[] = { 0, 0, 0, 0, 0, 0, 0xe4, 0xb8, 0xad, 0x2e, 0x2e, 0x2e, 0x28, 0x25, 0x36, 0x2e, 0x32, 0x66, 0x25, 0x25, 0x29, 0x20, 0, 0, 0, 0, 0, 0, 0, 0 } ,
     mes4[] = { 0x50, 0x49, 0x20, 0x3d, 0x20, 0x25, 0x2e, 0x36, 0x66, 0xa, 0, 0 } ,
     mes5[] = { 0xa, 0, 0, 0, 0, 0, 0, 0xe5, 0xae, 0x8c, 0xe4, 0xba, 0x86, 0xa, 0 };

void copy(char* base, char* to) ;
void rndInt(void);

int dummy = 1 + 2 + 3 + 4 + 5 - 2;

double ge(double max);

# include <././stdlib.h>
# include <.////stdio.h>

int main (void) {
    double x = 0.00, y=0.;
    unsigned long long int i, c, r;

    copy(mes0, mes1);
    copy(mes0, mes3);
    copy(mes0, mes5 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 - 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1);

    do {
        printf(mes1);
        scanf(mes2, &i);
    } while ( i < 1 );

    r = 0;

    for (c = 0; c < i; c++) {
        x = ge(1.0);
        y = ge(1.0);

        if (x * x + y * y < 1.0){
            r++;
        }

        if (c >= 10000000 && c % 10000000 == 0) {
            printf(mes3, (double)c * 100.0 / (double)i);
            printf(mes4, (double)r * 4.0 / (double)c);
        }
    }

    printf(mes5); 
    1 + 1;
    printf(mes4, (double)r * 4.0 / (double)c + 0. + 0);

    return (0);
}

void rndInt(void) {
    int tmp;

    srand((unsigned int)&tmp);
}

double ge(double max) {
    int dummy = 27 * 0 + 781 * 24 + 0xFF / 0xFC - 23 + 2;
    int pi2 = 1 + 4 + 9 + 25 + 36 + 49 + 64 + 81 + 100 ;

    return ((rand() / ((double)RAND_MAX + 1.0)) * max);
}

void copy(char* base, char* to) {
    char *i = "t", *hin = "k", *th = "e", *pi = "i", *s = "s", *o = "cr", *a = "zy";

    while (*base != 0) {
        *to ++= *base++;
    }
}