#include <stdio.h>


void esc_to_slash(char dest[], char src[]) {
        int i, j;

        i = j = 0;
        while(src[i] != '\0') {
                switch(src[i]) {
                        case '\n':
                                dest[j++] = '\\';
                                dest[j++] = 'n';
                                ++i;
                                break;
                        case '\\':
                                dest[j++] = '\\';
                                dest[j++] = '\\';
                                ++i;
                                break;
                        case '\t':
                                dest[j++] = '\\';
                                dest[j++] = 't';
                                ++i;
                                break;
                        case '\"':
                                dest[j++] = '\\';
                                dest[j++] = '\"';
                                ++i;
                                break;
                        default:
                                dest[j++] = src[i++];
                                break;
                }
        }

        dest[j] = '\0';
}

int main()
{
        char s_1[10000] = "#include <stdio.h>\n\n\nvoid esc_to_slash(char dest[], char src[]) {\n\tint i, j;\n\n\ti = j = 0;\n\twhile(src[i] != '\\0') {\n\t\tswitch(src[i]) {\n\t\t\tcase '\\n':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = 'n';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\\\':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\t':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = 't';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\\"':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = '\\\"';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tdest[j++] = src[i++];\n\t\t\t\tbreak;\n\t\t}\n\t}\n\n\tdest[j] = '\\0';\n}\n\nint main()\n{\n\tchar s_1[10000] = \"%s\";\de <stdio.h>\n\n\nvoid esc_to_slash(char dest[], char src[]) {\n\tint i, j;\n\n\ti = j = 0;\n\twhile(src[i] != '\\0') {\n\t\tswitch(src[i]) {\n\t\t\tcase '\\n':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = 'n';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\\\':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\t':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = 't';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tcase '\\\"':\n\t\t\t\tdest[j++] = '\\\\';\n\t\t\t\tdest[j++] = '\\\"';\n\t\t\t\t++i;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tdest[j++] = src[i++];\n\t\t\t\tbreak;\n\t\t}\n\t}\n\n\tdest[j] = '\\0';\n}\n\nint main()\n{\n\tchar s_1[10000] = \"%s\";\n\tchar s_2[10000];\n\n\tesc_to_slash(s_2, s_1);\n\n\tprintf(s_1, s_2);\n}\n";
        char s_2[10000];

        esc_to_slash(s_2, s_1);

        printf(s_1, s_2);
}